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428
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1 /* Lisp object printing and output streams.
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2 Copyright (C) 1985, 1986, 1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1995, 1996 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not synched with FSF. */
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23
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24 /* This file has been Mule-ized. */
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25
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26 /* Seriously hacked on by Ben Wing for Mule. */
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27
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28 #include <config.h>
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29 #include "lisp.h"
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30
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31 #include "backtrace.h"
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32 #include "buffer.h"
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33 #include "bytecode.h"
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34 #include "console-tty.h"
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35 #include "console-stream.h"
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36 #include "extents.h"
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37 #include "frame.h"
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38 #include "insdel.h"
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39 #include "lstream.h"
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40 #include "sysfile.h"
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41
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42 #include <limits.h>
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43 #include <float.h>
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44 /* Define if not in float.h */
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45 #ifndef DBL_DIG
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46 #define DBL_DIG 16
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47 #endif
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48
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49 Lisp_Object Vstandard_output, Qstandard_output;
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50
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51 /* The subroutine object for external-debugging-output is kept here
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52 for the convenience of the debugger. */
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53 Lisp_Object Qexternal_debugging_output;
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54
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55 /* Avoid actual stack overflow in print. */
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56 static int print_depth;
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57
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58 /* Detect most circularities to print finite output. */
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59 #define PRINT_CIRCLE 200
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60 static Lisp_Object being_printed[PRINT_CIRCLE];
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61
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62 /* Maximum length of list or vector to print in full; noninteger means
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63 effectively infinity */
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64
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65 Lisp_Object Vprint_length;
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66 Lisp_Object Qprint_length;
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67
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68 /* Maximum length of string to print in full; noninteger means
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69 effectively infinity */
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70
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71 Lisp_Object Vprint_string_length;
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72 Lisp_Object Qprint_string_length;
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73
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74 /* Maximum depth of list to print in full; noninteger means
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75 effectively infinity. */
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76
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77 Lisp_Object Vprint_level;
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78
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79 /* Label to use when making echo-area messages. */
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80
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81 Lisp_Object Vprint_message_label;
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82
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83 /* Nonzero means print newlines in strings as \n. */
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84
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85 int print_escape_newlines;
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86 int print_readably;
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87
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88 /* Non-nil means print #: before uninterned symbols.
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89 Neither t nor nil means so that and don't clear Vprint_gensym_alist
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90 on entry to and exit from print functions. */
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91 Lisp_Object Vprint_gensym;
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92 Lisp_Object Vprint_gensym_alist;
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93
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94 Lisp_Object Qdisplay_error;
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95 Lisp_Object Qprint_message_label;
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96
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97 /* Force immediate output of all printed data. Used for debugging. */
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98 int print_unbuffered;
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99
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100 FILE *termscript; /* Stdio stream being used for copy of all output. */
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101
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102
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103
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104 int stdout_needs_newline;
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105
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106 /* Write a string (in internal format) to stdio stream STREAM. */
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107
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108 void
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109 write_string_to_stdio_stream (FILE *stream, struct console *con,
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110 CONST Bufbyte *str,
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111 Bytecount offset, Bytecount len,
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112 enum external_data_format fmt)
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113 {
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114 int extlen;
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115 CONST Extbyte *extptr;
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116
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117 GET_CHARPTR_EXT_DATA_ALLOCA (str + offset, len, fmt, extptr, extlen);
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118 if (stream)
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119 {
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120 fwrite (extptr, 1, extlen, stream);
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121 #ifdef WINDOWSNT
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122 /* Q122442 says that pipes are "treated as files, not as
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123 devices", and that this is a feature. Before I found that
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124 article, I thought it was a bug. Thanks MS, I feel much
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125 better now. - kkm */
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126 if (stream == stdout || stream == stderr)
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127 fflush (stream);
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128 #endif
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129 }
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130 else
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131 {
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132 assert (CONSOLE_TTY_P (con));
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133 Lstream_write (XLSTREAM (CONSOLE_TTY_DATA (con)->outstream),
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134 extptr, extlen);
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135 }
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136 if (stream == stdout || stream == stderr ||
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137 (!stream && CONSOLE_TTY_DATA (con)->is_stdio))
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138 {
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139 if (termscript)
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140 {
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141 fwrite (extptr, 1, extlen, termscript);
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142 fflush (termscript);
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143 }
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144 stdout_needs_newline = (extptr[extlen - 1] != '\n');
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145 }
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146 }
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147
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148 /* Write a string to the output location specified in FUNCTION.
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149 Arguments NONRELOC, RELOC, OFFSET, and LEN are as in
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150 buffer_insert_string_1() in insdel.c. */
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151
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152 static void
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153 output_string (Lisp_Object function, CONST Bufbyte *nonreloc,
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154 Lisp_Object reloc, Bytecount offset, Bytecount len)
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155 {
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156 /* This function can GC */
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157 Charcount cclen;
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158 /* We change the value of nonreloc (fetching it from reloc as
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159 necessary), but we don't want to pass this changed value on to
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160 other functions that take both a nonreloc and a reloc, or things
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161 may get confused and an assertion failure in
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162 fixup_internal_substring() may get triggered. */
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163 CONST Bufbyte *newnonreloc = nonreloc;
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164 struct gcpro gcpro1, gcpro2;
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165
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166 /* Emacs won't print while GCing, but an external debugger might */
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167 if (gc_in_progress) return;
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168
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169 /* Perhaps not necessary but probably safer. */
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170 GCPRO2 (function, reloc);
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171
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172 fixup_internal_substring (newnonreloc, reloc, offset, &len);
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173
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174 if (STRINGP (reloc))
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175 newnonreloc = XSTRING_DATA (reloc);
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176
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177 cclen = bytecount_to_charcount (newnonreloc + offset, len);
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178
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179 if (LSTREAMP (function))
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180 {
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181 if (STRINGP (reloc))
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182 {
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183 /* Protect against Lstream_write() causing a GC and
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184 relocating the string. For small strings, we do it by
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185 alloc'ing the string and using a copy; for large strings,
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186 we inhibit GC. */
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187 if (len < 65536)
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188 {
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189 Bufbyte *copied = alloca_array (Bufbyte, len);
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190 memcpy (copied, newnonreloc + offset, len);
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191 Lstream_write (XLSTREAM (function), copied, len);
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192 }
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193 else
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194 {
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195 int speccount = specpdl_depth ();
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196 record_unwind_protect (restore_gc_inhibit,
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197 make_int (gc_currently_forbidden));
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198 gc_currently_forbidden = 1;
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199 Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
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200 unbind_to (speccount, Qnil);
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201 }
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202 }
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203 else
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204 Lstream_write (XLSTREAM (function), newnonreloc + offset, len);
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205
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206 if (print_unbuffered)
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207 Lstream_flush (XLSTREAM (function));
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208 }
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209 else if (BUFFERP (function))
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210 {
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211 CHECK_LIVE_BUFFER (function);
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212 buffer_insert_string (XBUFFER (function), nonreloc, reloc, offset, len);
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213 }
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214 else if (MARKERP (function))
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215 {
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216 /* marker_position() will err if marker doesn't point anywhere. */
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217 Bufpos spoint = marker_position (function);
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218
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219 buffer_insert_string_1 (XMARKER (function)->buffer,
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220 spoint, nonreloc, reloc, offset, len,
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221 0);
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222 Fset_marker (function, make_int (spoint + cclen),
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223 Fmarker_buffer (function));
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224 }
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225 else if (FRAMEP (function))
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226 {
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227 /* This gets used by functions not invoking print_prepare(),
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228 such as Fwrite_char, Fterpri, etc.. */
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229 struct frame *f = XFRAME (function);
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230 CHECK_LIVE_FRAME (function);
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231
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232 if (!EQ (Vprint_message_label, echo_area_status (f)))
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233 clear_echo_area_from_print (f, Qnil, 1);
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234 echo_area_append (f, nonreloc, reloc, offset, len, Vprint_message_label);
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235 }
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236 else if (EQ (function, Qt) || EQ (function, Qnil))
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237 {
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238 write_string_to_stdio_stream (stdout, 0, newnonreloc, offset, len,
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239 FORMAT_TERMINAL);
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240 }
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241 else
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242 {
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243 Charcount ccoff = bytecount_to_charcount (newnonreloc, offset);
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244 Charcount iii;
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245
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246 for (iii = ccoff; iii < cclen + ccoff; iii++)
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247 {
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248 call1 (function,
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249 make_char (charptr_emchar_n (newnonreloc, iii)));
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250 if (STRINGP (reloc))
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251 newnonreloc = XSTRING_DATA (reloc);
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252 }
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253 }
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254
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255 UNGCPRO;
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256 }
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257
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258 #define RESET_PRINT_GENSYM do { \
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259 if (!CONSP (Vprint_gensym)) \
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260 Vprint_gensym_alist = Qnil; \
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261 } while (0)
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262
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263 static Lisp_Object
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264 canonicalize_printcharfun (Lisp_Object printcharfun)
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265 {
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266 if (NILP (printcharfun))
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267 printcharfun = Vstandard_output;
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268
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269 if (EQ (printcharfun, Qt) || NILP (printcharfun))
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270 printcharfun = Fselected_frame (Qnil); /* print to minibuffer */
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271
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272 return printcharfun;
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273 }
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274
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275 static Lisp_Object
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276 print_prepare (Lisp_Object printcharfun, Lisp_Object *frame_kludge)
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277 {
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278 /* Emacs won't print while GCing, but an external debugger might */
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279 if (gc_in_progress)
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280 return Qnil;
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281
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282 RESET_PRINT_GENSYM;
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283
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284 printcharfun = canonicalize_printcharfun (printcharfun);
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285
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286 /* Here we could safely return the canonicalized PRINTCHARFUN.
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287 However, if PRINTCHARFUN is a frame, printing of complex
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288 structures becomes very expensive, because `append-message'
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289 (called by echo_area_append) gets called as many times as
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290 output_string() is called (and that's a *lot*). append-message
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291 tries to keep top of the message-stack in sync with the contents
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292 of " *Echo Area" buffer, consing a new string for each component
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293 of the printed structure. For instance, if you print (a a),
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294 append-message will cons up the following strings:
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295
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296 "("
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297 "(a"
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298 "(a "
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299 "(a a"
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300 "(a a)"
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301
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302 and will use only the last one. With larger objects, this turns
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303 into an O(n^2) consing frenzy that locks up XEmacs in incessant
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304 garbage collection.
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305
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306 We prevent this by creating a resizing_buffer stream and letting
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307 the printer write into it. print_finish() will notice this
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308 stream, and invoke echo_area_append() with the stream's buffer,
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309 only once. */
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310 if (FRAMEP (printcharfun))
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311 {
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312 CHECK_LIVE_FRAME (printcharfun);
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313 *frame_kludge = printcharfun;
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314 printcharfun = make_resizing_buffer_output_stream ();
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315 }
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316
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317 return printcharfun;
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318 }
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319
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320 static void
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321 print_finish (Lisp_Object stream, Lisp_Object frame_kludge)
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322 {
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323 /* Emacs won't print while GCing, but an external debugger might */
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324 if (gc_in_progress)
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325 return;
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326
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327 RESET_PRINT_GENSYM;
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328
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329 /* See the comment in print_prepare(). */
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330 if (FRAMEP (frame_kludge))
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331 {
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332 struct frame *f = XFRAME (frame_kludge);
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333 Lstream *str = XLSTREAM (stream);
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334 CHECK_LIVE_FRAME (frame_kludge);
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335
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336 Lstream_flush (str);
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337 if (!EQ (Vprint_message_label, echo_area_status (f)))
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338 clear_echo_area_from_print (f, Qnil, 1);
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339 echo_area_append (f, resizing_buffer_stream_ptr (str),
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340 Qnil, 0, Lstream_byte_count (str),
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341 Vprint_message_label);
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342 Lstream_delete (str);
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343 }
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344 }
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345
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346 /* Used for printing a single-byte character (*not* any Emchar). */
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347 #define write_char_internal(string_of_length_1, stream) \
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348 output_string (stream, (CONST Bufbyte *) (string_of_length_1), \
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349 Qnil, 0, 1)
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350
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351 /* NOTE: Do not call this with the data of a Lisp_String, as
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352 printcharfun might cause a GC, which might cause the string's data
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353 to be relocated. To princ a Lisp string, use:
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354
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355 print_internal (string, printcharfun, 0);
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356
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357 Also note that STREAM should be the result of
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358 canonicalize_printcharfun() (i.e. Qnil means stdout, not
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359 Vstandard_output, etc.) */
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360 void
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361 write_string_1 (CONST Bufbyte *str, Bytecount size, Lisp_Object stream)
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362 {
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363 /* This function can GC */
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364 #ifdef ERROR_CHECK_BUFPOS
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365 assert (size >= 0);
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366 #endif
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367 output_string (stream, str, Qnil, 0, size);
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368 }
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369
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370 void
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371 write_c_string (CONST char *str, Lisp_Object stream)
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372 {
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373 /* This function can GC */
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374 write_string_1 ((CONST Bufbyte *) str, strlen (str), stream);
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375 }
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376
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377
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378 DEFUN ("write-char", Fwrite_char, 1, 2, 0, /*
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379 Output character CH to stream STREAM.
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380 STREAM defaults to the value of `standard-output' (which see).
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381 */
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382 (ch, stream))
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383 {
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384 /* This function can GC */
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385 Bufbyte str[MAX_EMCHAR_LEN];
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386 Bytecount len;
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387
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388 CHECK_CHAR_COERCE_INT (ch);
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389 len = set_charptr_emchar (str, XCHAR (ch));
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390 output_string (canonicalize_printcharfun (stream), str, Qnil, 0, len);
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391 return ch;
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392 }
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393
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394 void
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395 temp_output_buffer_setup (Lisp_Object bufname)
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396 {
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397 /* This function can GC */
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398 struct buffer *old = current_buffer;
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399 Lisp_Object buf;
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400
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401 #ifdef I18N3
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402 /* #### This function should accept a Lisp_Object instead of a char *,
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403 so that proper translation on the buffer name can occur. */
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404 #endif
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405
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406 Fset_buffer (Fget_buffer_create (bufname));
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407
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408 current_buffer->read_only = Qnil;
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409 Ferase_buffer (Qnil);
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410
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411 XSETBUFFER (buf, current_buffer);
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412 specbind (Qstandard_output, buf);
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|
413
|
|
|
414 set_buffer_internal (old);
|
|
|
415 }
|
|
|
416
|
|
|
417 Lisp_Object
|
|
|
418 internal_with_output_to_temp_buffer (Lisp_Object bufname,
|
|
|
419 Lisp_Object (*function) (Lisp_Object arg),
|
|
|
420 Lisp_Object arg,
|
|
|
421 Lisp_Object same_frame)
|
|
|
422 {
|
|
|
423 int speccount = specpdl_depth ();
|
|
|
424 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
425 Lisp_Object buf = Qnil;
|
|
|
426
|
|
|
427 GCPRO3 (buf, arg, same_frame);
|
|
|
428
|
|
|
429 temp_output_buffer_setup (bufname);
|
|
|
430 buf = Vstandard_output;
|
|
|
431
|
|
|
432 arg = (*function) (arg);
|
|
|
433
|
|
|
434 temp_output_buffer_show (buf, same_frame);
|
|
|
435 UNGCPRO;
|
|
|
436
|
|
|
437 return unbind_to (speccount, arg);
|
|
|
438 }
|
|
|
439
|
|
|
440 DEFUN ("with-output-to-temp-buffer", Fwith_output_to_temp_buffer, 1, UNEVALLED, 0, /*
|
|
|
441 Bind `standard-output' to buffer BUFNAME, eval BODY, then show that buffer.
|
|
|
442 The buffer is cleared out initially, and marked as unmodified when done.
|
|
|
443 All output done by BODY is inserted in that buffer by default.
|
|
|
444 The buffer is displayed in another window, but not selected.
|
|
|
445 The value of the last form in BODY is returned.
|
|
|
446 If BODY does not finish normally, the buffer BUFNAME is not displayed.
|
|
|
447
|
|
|
448 If variable `temp-buffer-show-function' is non-nil, call it at the end
|
|
|
449 to get the buffer displayed. It gets one argument, the buffer to display.
|
|
|
450 */
|
|
|
451 (args))
|
|
|
452 {
|
|
|
453 /* This function can GC */
|
|
|
454 Lisp_Object name = Qnil;
|
|
|
455 int speccount = specpdl_depth ();
|
|
|
456 struct gcpro gcpro1, gcpro2;
|
|
|
457 Lisp_Object val = Qnil;
|
|
|
458
|
|
|
459 #ifdef I18N3
|
|
|
460 /* #### should set the buffer to be translating. See print_internal(). */
|
|
|
461 #endif
|
|
|
462
|
|
|
463 GCPRO2 (name, val);
|
|
|
464 name = Feval (XCAR (args));
|
|
|
465
|
|
|
466 CHECK_STRING (name);
|
|
|
467
|
|
|
468 temp_output_buffer_setup (name);
|
|
|
469 UNGCPRO;
|
|
|
470
|
|
|
471 val = Fprogn (XCDR (args));
|
|
|
472
|
|
|
473 temp_output_buffer_show (Vstandard_output, Qnil);
|
|
|
474
|
|
|
475 return unbind_to (speccount, val);
|
|
|
476 }
|
|
|
477
|
|
|
478 DEFUN ("terpri", Fterpri, 0, 1, 0, /*
|
|
|
479 Output a newline to STREAM.
|
|
|
480 If STREAM is omitted or nil, the value of `standard-output' is used.
|
|
|
481 */
|
|
|
482 (stream))
|
|
|
483 {
|
|
|
484 /* This function can GC */
|
|
|
485 write_char_internal ("\n", canonicalize_printcharfun (stream));
|
|
|
486 return Qt;
|
|
|
487 }
|
|
|
488
|
|
|
489 DEFUN ("prin1", Fprin1, 1, 2, 0, /*
|
|
|
490 Output the printed representation of OBJECT, any Lisp object.
|
|
|
491 Quoting characters are printed when needed to make output that `read'
|
|
|
492 can handle, whenever this is possible.
|
|
|
493 Output stream is STREAM, or value of `standard-output' (which see).
|
|
|
494 */
|
|
|
495 (object, stream))
|
|
|
496 {
|
|
|
497 /* This function can GC */
|
|
|
498 Lisp_Object frame = Qnil;
|
|
|
499 struct gcpro gcpro1, gcpro2;
|
|
|
500 GCPRO2 (object, stream);
|
|
|
501
|
|
|
502 print_depth = 0;
|
|
|
503 stream = print_prepare (stream, &frame);
|
|
|
504 print_internal (object, stream, 1);
|
|
|
505 print_finish (stream, frame);
|
|
|
506
|
|
|
507 UNGCPRO;
|
|
|
508 return object;
|
|
|
509 }
|
|
|
510
|
|
|
511 DEFUN ("prin1-to-string", Fprin1_to_string, 1, 2, 0, /*
|
|
|
512 Return a string containing the printed representation of OBJECT,
|
|
|
513 any Lisp object. Quoting characters are used when needed to make output
|
|
|
514 that `read' can handle, whenever this is possible, unless the optional
|
|
|
515 second argument NOESCAPE is non-nil.
|
|
|
516 */
|
|
|
517 (object, noescape))
|
|
|
518 {
|
|
|
519 /* This function can GC */
|
|
|
520 Lisp_Object result = Qnil;
|
|
|
521 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
522 Lstream *str = XLSTREAM (stream);
|
|
|
523 /* gcpro OBJECT in case a caller forgot to do so */
|
|
|
524 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
525 GCPRO3 (object, stream, result);
|
|
|
526
|
|
|
527 print_depth = 0;
|
|
|
528 RESET_PRINT_GENSYM;
|
|
|
529 print_internal (object, stream, NILP (noescape));
|
|
|
530 RESET_PRINT_GENSYM;
|
|
|
531 Lstream_flush (str);
|
|
|
532 UNGCPRO;
|
|
|
533 result = make_string (resizing_buffer_stream_ptr (str),
|
|
|
534 Lstream_byte_count (str));
|
|
|
535 Lstream_delete (str);
|
|
|
536 return result;
|
|
|
537 }
|
|
|
538
|
|
|
539 DEFUN ("princ", Fprinc, 1, 2, 0, /*
|
|
|
540 Output the printed representation of OBJECT, any Lisp object.
|
|
|
541 No quoting characters are used; no delimiters are printed around
|
|
|
542 the contents of strings.
|
|
|
543 Output stream is STREAM, or value of standard-output (which see).
|
|
|
544 */
|
|
|
545 (object, stream))
|
|
|
546 {
|
|
|
547 /* This function can GC */
|
|
|
548 Lisp_Object frame = Qnil;
|
|
|
549 struct gcpro gcpro1, gcpro2;
|
|
|
550
|
|
|
551 GCPRO2 (object, stream);
|
|
|
552 stream = print_prepare (stream, &frame);
|
|
|
553 print_depth = 0;
|
|
|
554 print_internal (object, stream, 0);
|
|
|
555 print_finish (stream, frame);
|
|
|
556 UNGCPRO;
|
|
|
557 return object;
|
|
|
558 }
|
|
|
559
|
|
|
560 DEFUN ("print", Fprint, 1, 2, 0, /*
|
|
|
561 Output the printed representation of OBJECT, with newlines around it.
|
|
|
562 Quoting characters are printed when needed to make output that `read'
|
|
|
563 can handle, whenever this is possible.
|
|
|
564 Output stream is STREAM, or value of `standard-output' (which see).
|
|
|
565 */
|
|
|
566 (object, stream))
|
|
|
567 {
|
|
|
568 /* This function can GC */
|
|
|
569 Lisp_Object frame = Qnil;
|
|
|
570 struct gcpro gcpro1, gcpro2;
|
|
|
571
|
|
|
572 GCPRO2 (object, stream);
|
|
|
573 stream = print_prepare (stream, &frame);
|
|
|
574 print_depth = 0;
|
|
|
575 write_char_internal ("\n", stream);
|
|
|
576 print_internal (object, stream, 1);
|
|
|
577 write_char_internal ("\n", stream);
|
|
|
578 print_finish (stream, frame);
|
|
|
579 UNGCPRO;
|
|
|
580 return object;
|
|
|
581 }
|
|
|
582
|
|
|
583 /* Print an error message for the error DATA to STREAM. This is a
|
|
|
584 complete implementation of `display-error', which used to be in
|
|
|
585 Lisp (see prim/cmdloop.el). It was ported to C so it can be used
|
|
|
586 efficiently by Ferror_message_string. Fdisplay_error and
|
|
|
587 Ferror_message_string are trivial wrappers around this function.
|
|
|
588
|
|
|
589 STREAM should be the result of canonicalize_printcharfun(). */
|
|
|
590 static void
|
|
|
591 print_error_message (Lisp_Object error_object, Lisp_Object stream)
|
|
|
592 {
|
|
|
593 /* This function can GC */
|
|
|
594 Lisp_Object type = Fcar_safe (error_object);
|
|
|
595 Lisp_Object method = Qnil;
|
|
|
596 Lisp_Object tail;
|
|
|
597
|
|
|
598 /* No need to GCPRO anything under the assumption that ERROR_OBJECT
|
|
|
599 is GCPRO'd. */
|
|
|
600
|
|
|
601 if (! (CONSP (error_object) && SYMBOLP (type)
|
|
|
602 && CONSP (Fget (type, Qerror_conditions, Qnil))))
|
|
|
603 goto error_throw;
|
|
|
604
|
|
|
605 tail = XCDR (error_object);
|
|
|
606 while (!NILP (tail))
|
|
|
607 {
|
|
|
608 if (CONSP (tail))
|
|
|
609 tail = XCDR (tail);
|
|
|
610 else
|
|
|
611 goto error_throw;
|
|
|
612 }
|
|
|
613 tail = Fget (type, Qerror_conditions, Qnil);
|
|
|
614 while (!NILP (tail))
|
|
|
615 {
|
|
|
616 if (!(CONSP (tail) && SYMBOLP (XCAR (tail))))
|
|
|
617 goto error_throw;
|
|
|
618 else if (!NILP (Fget (XCAR (tail), Qdisplay_error, Qnil)))
|
|
|
619 {
|
|
|
620 method = Fget (XCAR (tail), Qdisplay_error, Qnil);
|
|
|
621 goto error_throw;
|
|
|
622 }
|
|
|
623 else
|
|
|
624 tail = XCDR (tail);
|
|
|
625 }
|
|
|
626 /* Default method */
|
|
|
627 {
|
|
|
628 int first = 1;
|
|
|
629 int speccount = specpdl_depth ();
|
|
|
630
|
|
|
631 specbind (Qprint_message_label, Qerror);
|
|
|
632 tail = Fcdr (error_object);
|
|
|
633 if (EQ (type, Qerror))
|
|
|
634 {
|
|
|
635 print_internal (Fcar (tail), stream, 0);
|
|
|
636 tail = Fcdr (tail);
|
|
|
637 }
|
|
|
638 else
|
|
|
639 {
|
|
|
640 Lisp_Object errmsg = Fget (type, Qerror_message, Qnil);
|
|
|
641 if (NILP (errmsg))
|
|
|
642 print_internal (type, stream, 0);
|
|
|
643 else
|
|
|
644 print_internal (LISP_GETTEXT (errmsg), stream, 0);
|
|
|
645 }
|
|
|
646 while (!NILP (tail))
|
|
|
647 {
|
|
|
648 write_c_string (first ? ": " : ", ", stream);
|
|
|
649 print_internal (Fcar (tail), stream, 1);
|
|
|
650 tail = Fcdr (tail);
|
|
|
651 first = 0;
|
|
|
652 }
|
|
|
653 unbind_to (speccount, Qnil);
|
|
|
654 return;
|
|
|
655 /* not reached */
|
|
|
656 }
|
|
|
657
|
|
|
658 error_throw:
|
|
|
659 if (NILP (method))
|
|
|
660 {
|
|
|
661 write_c_string (GETTEXT ("Peculiar error "), stream);
|
|
|
662 print_internal (error_object, stream, 1);
|
|
|
663 return;
|
|
|
664 }
|
|
|
665 else
|
|
|
666 {
|
|
|
667 call2 (method, error_object, stream);
|
|
|
668 }
|
|
|
669 }
|
|
|
670
|
|
|
671 DEFUN ("error-message-string", Ferror_message_string, 1, 1, 0, /*
|
|
|
672 Convert ERROR-OBJECT to an error message, and return it.
|
|
|
673
|
|
|
674 The format of ERROR-OBJECT should be (ERROR-SYMBOL . DATA). The
|
|
|
675 message is equivalent to the one that would be issued by
|
|
|
676 `display-error' with the same argument.
|
|
|
677 */
|
|
|
678 (error_object))
|
|
|
679 {
|
|
|
680 /* This function can GC */
|
|
|
681 Lisp_Object result = Qnil;
|
|
|
682 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
683 struct gcpro gcpro1;
|
|
|
684 GCPRO1 (stream);
|
|
|
685
|
|
|
686 print_error_message (error_object, stream);
|
|
|
687 Lstream_flush (XLSTREAM (stream));
|
|
|
688 result = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
689 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
690 Lstream_delete (XLSTREAM (stream));
|
|
|
691
|
|
|
692 UNGCPRO;
|
|
|
693 return result;
|
|
|
694 }
|
|
|
695
|
|
|
696 DEFUN ("display-error", Fdisplay_error, 2, 2, 0, /*
|
|
|
697 Display ERROR-OBJECT on STREAM in a user-friendly way.
|
|
|
698 */
|
|
|
699 (error_object, stream))
|
|
|
700 {
|
|
|
701 /* This function can GC */
|
|
|
702 print_error_message (error_object, canonicalize_printcharfun (stream));
|
|
|
703 return Qnil;
|
|
|
704 }
|
|
|
705
|
|
|
706
|
|
|
707 #ifdef LISP_FLOAT_TYPE
|
|
|
708
|
|
|
709 Lisp_Object Vfloat_output_format;
|
|
|
710
|
|
|
711 /*
|
|
|
712 * This buffer should be at least as large as the max string size of the
|
|
|
713 * largest float, printed in the biggest notation. This is undoubtably
|
|
|
714 * 20d float_output_format, with the negative of the C-constant "HUGE"
|
|
|
715 * from <math.h>.
|
|
|
716 *
|
|
|
717 * On the vax the worst case is -1e38 in 20d format which takes 61 bytes.
|
|
|
718 *
|
|
|
719 * I assume that IEEE-754 format numbers can take 329 bytes for the worst
|
|
|
720 * case of -1e307 in 20d float_output_format. What is one to do (short of
|
|
|
721 * re-writing _doprnt to be more sane)?
|
|
|
722 * -wsr
|
|
|
723 */
|
|
|
724 void
|
|
|
725 float_to_string (char *buf, double data)
|
|
|
726 {
|
|
|
727 Bufbyte *cp, c;
|
|
|
728 int width;
|
|
|
729
|
|
|
730 if (NILP (Vfloat_output_format)
|
|
|
731 || !STRINGP (Vfloat_output_format))
|
|
|
732 lose:
|
|
|
733 sprintf (buf, "%.16g", data);
|
|
|
734 else /* oink oink */
|
|
|
735 {
|
|
|
736 /* Check that the spec we have is fully valid.
|
|
|
737 This means not only valid for printf,
|
|
|
738 but meant for floats, and reasonable. */
|
|
|
739 cp = XSTRING_DATA (Vfloat_output_format);
|
|
|
740
|
|
|
741 if (cp[0] != '%')
|
|
|
742 goto lose;
|
|
|
743 if (cp[1] != '.')
|
|
|
744 goto lose;
|
|
|
745
|
|
|
746 cp += 2;
|
|
|
747 for (width = 0; (c = *cp, isdigit (c)); cp++)
|
|
|
748 {
|
|
|
749 width *= 10;
|
|
|
750 width += c - '0';
|
|
|
751 }
|
|
|
752
|
|
|
753 if (*cp != 'e' && *cp != 'f' && *cp != 'g' && *cp != 'E' && *cp != 'G')
|
|
|
754 goto lose;
|
|
|
755
|
|
|
756 if (width < (int) (*cp != 'e' && *cp != 'E') || width > DBL_DIG)
|
|
|
757 goto lose;
|
|
|
758
|
|
|
759 if (cp[1] != 0)
|
|
|
760 goto lose;
|
|
|
761
|
|
|
762 sprintf (buf, (char *) XSTRING_DATA (Vfloat_output_format),
|
|
|
763 data);
|
|
|
764 }
|
|
|
765
|
|
|
766 /* added by jwz: don't allow "1.0" to print as "1"; that destroys
|
|
|
767 the read-equivalence of lisp objects. (* x 1) and (* x 1.0) do
|
|
|
768 not do the same thing, so it's important that the printed
|
|
|
769 representation of that form not be corrupted by the printer.
|
|
|
770 */
|
|
|
771 {
|
|
|
772 Bufbyte *s = (Bufbyte *) buf; /* don't use signed chars here!
|
|
|
773 isdigit() can't hack them! */
|
|
|
774 if (*s == '-') s++;
|
|
|
775 for (; *s; s++)
|
|
|
776 /* if there's a non-digit, then there is a decimal point, or
|
|
|
777 it's in exponential notation, both of which are ok. */
|
|
|
778 if (!isdigit (*s))
|
|
|
779 goto DONE_LABEL;
|
|
|
780 /* otherwise, we need to hack it. */
|
|
|
781 *s++ = '.';
|
|
|
782 *s++ = '0';
|
|
|
783 *s = 0;
|
|
|
784 }
|
|
|
785 DONE_LABEL:
|
|
|
786
|
|
|
787 /* Some machines print "0.4" as ".4". I don't like that. */
|
|
|
788 if (buf [0] == '.' || (buf [0] == '-' && buf [1] == '.'))
|
|
|
789 {
|
|
|
790 int i;
|
|
|
791 for (i = strlen (buf) + 1; i >= 0; i--)
|
|
|
792 buf [i+1] = buf [i];
|
|
|
793 buf [(buf [0] == '-' ? 1 : 0)] = '0';
|
|
|
794 }
|
|
|
795 }
|
|
|
796 #endif /* LISP_FLOAT_TYPE */
|
|
|
797
|
|
|
798 /* Print NUMBER to BUFFER. The digits are first written in reverse
|
|
|
799 order (the least significant digit first), and are then reversed.
|
|
|
800 This is equivalent to sprintf(buffer, "%ld", number), only much
|
|
|
801 faster.
|
|
|
802
|
|
|
803 BUFFER should accept 24 bytes. This should suffice for the longest
|
|
|
804 numbers on 64-bit machines, including the `-' sign and the trailing
|
|
|
805 \0. */
|
|
|
806 void
|
|
|
807 long_to_string (char *buffer, long number)
|
|
|
808 {
|
|
|
809 #if (SIZEOF_LONG != 4) && (SIZEOF_LONG != 8)
|
|
|
810 /* Huh? */
|
|
|
811 sprintf (buffer, "%ld", number);
|
|
|
812 #else /* (SIZEOF_LONG == 4) || (SIZEOF_LONG == 8) */
|
|
|
813 char *p = buffer;
|
|
|
814 int force = 0;
|
|
|
815
|
|
|
816 if (number < 0)
|
|
|
817 {
|
|
|
818 *p++ = '-';
|
|
|
819 number = -number;
|
|
|
820 }
|
|
|
821
|
|
|
822 #define FROB(figure) do { \
|
|
|
823 if (force || number >= figure) \
|
|
|
824 *p++ = number / figure + '0', number %= figure, force = 1; \
|
|
|
825 } while (0)
|
|
|
826 #if SIZEOF_LONG == 8
|
|
|
827 FROB (1000000000000000000L);
|
|
|
828 FROB (100000000000000000L);
|
|
|
829 FROB (10000000000000000L);
|
|
|
830 FROB (1000000000000000L);
|
|
|
831 FROB (100000000000000L);
|
|
|
832 FROB (10000000000000L);
|
|
|
833 FROB (1000000000000L);
|
|
|
834 FROB (100000000000L);
|
|
|
835 FROB (10000000000L);
|
|
|
836 #endif /* SIZEOF_LONG == 8 */
|
|
|
837 FROB (1000000000);
|
|
|
838 FROB (100000000);
|
|
|
839 FROB (10000000);
|
|
|
840 FROB (1000000);
|
|
|
841 FROB (100000);
|
|
|
842 FROB (10000);
|
|
|
843 FROB (1000);
|
|
|
844 FROB (100);
|
|
|
845 FROB (10);
|
|
|
846 #undef FROB
|
|
|
847 *p++ = number + '0';
|
|
|
848 *p = '\0';
|
|
|
849 #endif /* (SIZEOF_LONG == 4) || (SIZEOF_LONG == 8) */
|
|
|
850 }
|
|
|
851
|
|
|
852 static void
|
|
|
853 print_vector_internal (CONST char *start, CONST char *end,
|
|
|
854 Lisp_Object obj,
|
|
|
855 Lisp_Object printcharfun, int escapeflag)
|
|
|
856 {
|
|
|
857 /* This function can GC */
|
|
|
858 int i;
|
|
|
859 int len = XVECTOR_LENGTH (obj);
|
|
|
860 int last = len;
|
|
|
861 struct gcpro gcpro1, gcpro2;
|
|
|
862 GCPRO2 (obj, printcharfun);
|
|
|
863
|
|
|
864 if (INTP (Vprint_length))
|
|
|
865 {
|
|
|
866 int max = XINT (Vprint_length);
|
|
|
867 if (max < len) last = max;
|
|
|
868 }
|
|
|
869
|
|
|
870 write_c_string (start, printcharfun);
|
|
|
871 for (i = 0; i < last; i++)
|
|
|
872 {
|
|
|
873 Lisp_Object elt = XVECTOR_DATA (obj)[i];
|
|
|
874 if (i != 0) write_char_internal (" ", printcharfun);
|
|
|
875 print_internal (elt, printcharfun, escapeflag);
|
|
|
876 }
|
|
|
877 UNGCPRO;
|
|
|
878 if (last != len)
|
|
|
879 write_c_string (" ...", printcharfun);
|
|
|
880 write_c_string (end, printcharfun);
|
|
|
881 }
|
|
|
882
|
|
|
883 void
|
|
|
884 print_cons (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
885 {
|
|
|
886 /* This function can GC */
|
|
|
887 struct gcpro gcpro1, gcpro2;
|
|
|
888
|
|
|
889 /* If print_readably is on, print (quote -foo-) as '-foo-
|
|
|
890 (Yeah, this should really be what print-pretty does, but we
|
|
|
891 don't have the rest of a pretty printer, and this actually
|
|
|
892 has non-negligible impact on size/speed of .elc files.)
|
|
|
893 */
|
|
|
894 if (print_readably &&
|
|
|
895 EQ (XCAR (obj), Qquote) &&
|
|
|
896 CONSP (XCDR (obj)) &&
|
|
|
897 NILP (XCDR (XCDR (obj))))
|
|
|
898 {
|
|
|
899 obj = XCAR (XCDR (obj));
|
|
|
900 GCPRO2 (obj, printcharfun);
|
|
|
901 write_char_internal ("\'", printcharfun);
|
|
|
902 UNGCPRO;
|
|
|
903 print_internal (obj, printcharfun, escapeflag);
|
|
|
904 return;
|
|
|
905 }
|
|
|
906
|
|
|
907 GCPRO2 (obj, printcharfun);
|
|
|
908 write_char_internal ("(", printcharfun);
|
|
|
909
|
|
|
910 {
|
|
|
911 int len;
|
|
|
912 int max = INTP (Vprint_length) ? XINT (Vprint_length) : INT_MAX;
|
|
|
913 Lisp_Object tortoise;
|
|
|
914 /* Use tortoise/hare to make sure circular lists don't infloop */
|
|
|
915
|
|
|
916 for (tortoise = obj, len = 0;
|
|
|
917 CONSP (obj);
|
|
|
918 obj = XCDR (obj), len++)
|
|
|
919 {
|
|
|
920 if (len > 0)
|
|
|
921 write_char_internal (" ", printcharfun);
|
|
|
922 if (EQ (obj, tortoise) && len > 0)
|
|
|
923 {
|
|
|
924 if (print_readably)
|
|
|
925 error ("printing unreadable circular list");
|
|
|
926 else
|
|
|
927 write_c_string ("... <circular list>", printcharfun);
|
|
|
928 break;
|
|
|
929 }
|
|
|
930 if (len & 1)
|
|
|
931 tortoise = XCDR (tortoise);
|
|
|
932 if (len > max)
|
|
|
933 {
|
|
|
934 write_c_string ("...", printcharfun);
|
|
|
935 break;
|
|
|
936 }
|
|
|
937 print_internal (XCAR (obj), printcharfun, escapeflag);
|
|
|
938 }
|
|
|
939 }
|
|
|
940 if (!LISTP (obj))
|
|
|
941 {
|
|
|
942 write_c_string (" . ", printcharfun);
|
|
|
943 print_internal (obj, printcharfun, escapeflag);
|
|
|
944 }
|
|
|
945 UNGCPRO;
|
|
|
946
|
|
|
947 write_char_internal (")", printcharfun);
|
|
|
948 return;
|
|
|
949 }
|
|
|
950
|
|
|
951 void
|
|
|
952 print_vector (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
953 {
|
|
|
954 print_vector_internal ("[", "]", obj, printcharfun, escapeflag);
|
|
|
955 }
|
|
|
956
|
|
|
957 void
|
|
|
958 print_string (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
959 {
|
|
|
960 struct Lisp_String *s = XSTRING (obj);
|
|
|
961 /* We distinguish between Bytecounts and Charcounts, to make
|
|
|
962 Vprint_string_length work correctly under Mule. */
|
|
|
963 Charcount size = string_char_length (s);
|
|
|
964 Charcount max = size;
|
|
|
965 Bytecount bcmax = string_length (s);
|
|
|
966 struct gcpro gcpro1, gcpro2;
|
|
|
967 GCPRO2 (obj, printcharfun);
|
|
|
968
|
|
|
969 if (INTP (Vprint_string_length) &&
|
|
|
970 XINT (Vprint_string_length) < max)
|
|
|
971 {
|
|
|
972 max = XINT (Vprint_string_length);
|
|
|
973 bcmax = charcount_to_bytecount (string_data (s), max);
|
|
|
974 }
|
|
|
975 if (max < 0)
|
|
|
976 {
|
|
|
977 max = 0;
|
|
|
978 bcmax = 0;
|
|
|
979 }
|
|
|
980
|
|
|
981 if (!escapeflag)
|
|
|
982 {
|
|
|
983 /* This deals with GC-relocation and Mule. */
|
|
|
984 output_string (printcharfun, 0, obj, 0, bcmax);
|
|
|
985 if (max < size)
|
|
|
986 write_c_string (" ...", printcharfun);
|
|
|
987 }
|
|
|
988 else
|
|
|
989 {
|
|
|
990 Bytecount i, last = 0;
|
|
|
991
|
|
|
992 write_char_internal ("\"", printcharfun);
|
|
|
993 for (i = 0; i < bcmax; i++)
|
|
|
994 {
|
|
|
995 Bufbyte ch = string_byte (s, i);
|
|
|
996 if (ch == '\"' || ch == '\\'
|
|
|
997 || (ch == '\n' && print_escape_newlines))
|
|
|
998 {
|
|
|
999 if (i > last)
|
|
|
1000 {
|
|
|
1001 output_string (printcharfun, 0, obj, last,
|
|
|
1002 i - last);
|
|
|
1003 }
|
|
|
1004 if (ch == '\n')
|
|
|
1005 {
|
|
|
1006 write_c_string ("\\n", printcharfun);
|
|
|
1007 }
|
|
|
1008 else
|
|
|
1009 {
|
|
|
1010 write_char_internal ("\\", printcharfun);
|
|
|
1011 /* This is correct for Mule because the
|
|
|
1012 character is either \ or " */
|
|
|
1013 write_char_internal (string_data (s) + i, printcharfun);
|
|
|
1014 }
|
|
|
1015 last = i + 1;
|
|
|
1016 }
|
|
|
1017 }
|
|
|
1018 if (bcmax > last)
|
|
|
1019 {
|
|
|
1020 output_string (printcharfun, 0, obj, last,
|
|
|
1021 bcmax - last);
|
|
|
1022 }
|
|
|
1023 if (max < size)
|
|
|
1024 write_c_string (" ...", printcharfun);
|
|
|
1025 write_char_internal ("\"", printcharfun);
|
|
|
1026 }
|
|
|
1027 UNGCPRO;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 static void
|
|
|
1031 default_object_printer (Lisp_Object obj, Lisp_Object printcharfun,
|
|
|
1032 int escapeflag)
|
|
|
1033 {
|
|
|
1034 struct lcrecord_header *header =
|
|
|
1035 (struct lcrecord_header *) XPNTR (obj);
|
|
|
1036 char buf[200];
|
|
|
1037
|
|
|
1038 if (print_readably)
|
|
|
1039 error ("printing unreadable object #<%s 0x%x>",
|
|
|
1040 LHEADER_IMPLEMENTATION (&header->lheader)->name,
|
|
|
1041 header->uid);
|
|
|
1042
|
|
|
1043 sprintf (buf, "#<%s 0x%x>",
|
|
|
1044 LHEADER_IMPLEMENTATION (&header->lheader)->name,
|
|
|
1045 header->uid);
|
|
|
1046 write_c_string (buf, printcharfun);
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 void
|
|
|
1050 internal_object_printer (Lisp_Object obj, Lisp_Object printcharfun,
|
|
|
1051 int escapeflag)
|
|
|
1052 {
|
|
|
1053 char buf[200];
|
|
|
1054 sprintf (buf, "#<INTERNAL OBJECT (XEmacs bug?) (%s) 0x%lx>",
|
|
|
1055 XRECORD_LHEADER_IMPLEMENTATION (obj)->name,
|
|
|
1056 (unsigned long) XPNTR (obj));
|
|
|
1057 write_c_string (buf, printcharfun);
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 void
|
|
|
1061 print_internal (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
1062 {
|
|
|
1063 /* This function can GC */
|
|
|
1064
|
|
|
1065 QUIT;
|
|
|
1066
|
|
|
1067 /* Emacs won't print while GCing, but an external debugger might */
|
|
|
1068 if (gc_in_progress) return;
|
|
|
1069
|
|
|
1070 #ifdef I18N3
|
|
|
1071 /* #### Both input and output streams should have a flag associated
|
|
|
1072 with them indicating whether output to that stream, or strings
|
|
|
1073 read from the stream, get translated using Fgettext(). Such a
|
|
|
1074 stream is called a "translating stream". For the minibuffer and
|
|
|
1075 external-debugging-output this is always true on output, and
|
|
|
1076 with-output-to-temp-buffer sets the flag to true for the buffer
|
|
|
1077 it creates. This flag should also be user-settable. Perhaps it
|
|
|
1078 should be split up into two flags, one for input and one for
|
|
|
1079 output. */
|
|
|
1080 #endif
|
|
|
1081
|
|
|
1082 /* Detect circularities and truncate them.
|
|
|
1083 No need to offer any alternative--this is better than an error. */
|
|
|
1084 if (CONSP (obj) || VECTORP (obj) || COMPILED_FUNCTIONP (obj))
|
|
|
1085 {
|
|
|
1086 int i;
|
|
|
1087 for (i = 0; i < print_depth; i++)
|
|
|
1088 if (EQ (obj, being_printed[i]))
|
|
|
1089 {
|
|
|
1090 char buf[32];
|
|
|
1091 *buf = '#';
|
|
|
1092 long_to_string (buf + 1, i);
|
|
|
1093 write_c_string (buf, printcharfun);
|
|
|
1094 return;
|
|
|
1095 }
|
|
|
1096 }
|
|
|
1097
|
|
|
1098 being_printed[print_depth] = obj;
|
|
|
1099 print_depth++;
|
|
|
1100
|
|
|
1101 if (print_depth > PRINT_CIRCLE)
|
|
|
1102 error ("Apparently circular structure being printed");
|
|
|
1103
|
|
|
1104 switch (XTYPE (obj))
|
|
|
1105 {
|
|
|
1106 case Lisp_Type_Int_Even:
|
|
|
1107 case Lisp_Type_Int_Odd:
|
|
|
1108 {
|
|
|
1109 char buf[24];
|
|
|
1110 long_to_string (buf, XINT (obj));
|
|
|
1111 write_c_string (buf, printcharfun);
|
|
|
1112 break;
|
|
|
1113 }
|
|
|
1114
|
|
|
1115 case Lisp_Type_Char:
|
|
|
1116 {
|
|
|
1117 /* God intended that this be #\..., you know. */
|
|
|
1118 char buf[16];
|
|
|
1119 Emchar ch = XCHAR (obj);
|
|
|
1120 char *p = buf;
|
|
|
1121 *p++ = '?';
|
|
|
1122 if (ch == '\n')
|
|
|
1123 *p++ = '\\', *p++ = 'n';
|
|
|
1124 else if (ch == '\r')
|
|
|
1125 *p++ = '\\', *p++ = 'r';
|
|
|
1126 else if (ch == '\t')
|
|
|
1127 *p++ = '\\', *p++ = 't';
|
|
|
1128 else if (ch < 32)
|
|
|
1129 {
|
|
|
1130 *p++ = '\\', *p++ = '^';
|
|
|
1131 *p++ = ch + 64;
|
|
|
1132 if ((ch + 64) == '\\')
|
|
|
1133 *p++ = '\\';
|
|
|
1134 }
|
|
|
1135 else if (ch == 127)
|
|
|
1136 *p++ = '\\', *p++ = '^', *p++ = '?';
|
|
|
1137 else if (ch >= 128 && ch < 160)
|
|
|
1138 {
|
|
|
1139 *p++ = '\\', *p++ = '^';
|
|
|
1140 p += set_charptr_emchar ((Bufbyte *)p, ch + 64);
|
|
|
1141 }
|
|
|
1142 else if (ch < 127
|
|
|
1143 && !isdigit (ch)
|
|
|
1144 && !isalpha (ch)
|
|
|
1145 && ch != '^') /* must not backslash this or it will
|
|
|
1146 be interpreted as the start of a
|
|
|
1147 control char */
|
|
|
1148 *p++ = '\\', *p++ = ch;
|
|
|
1149 else
|
|
|
1150 p += set_charptr_emchar ((Bufbyte *)p, ch);
|
|
|
1151 output_string (printcharfun, (Bufbyte *)buf, Qnil, 0, p - buf);
|
|
|
1152 break;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 case Lisp_Type_Record:
|
|
|
1156 {
|
|
|
1157 struct lrecord_header *lheader = XRECORD_LHEADER (obj);
|
|
|
1158 struct gcpro gcpro1, gcpro2;
|
|
|
1159
|
|
|
1160 if (CONSP (obj) || VECTORP(obj))
|
|
|
1161 {
|
|
|
1162 /* If deeper than spec'd depth, print placeholder. */
|
|
|
1163 if (INTP (Vprint_level)
|
|
|
1164 && print_depth > XINT (Vprint_level))
|
|
|
1165 {
|
|
|
1166 GCPRO2 (obj, printcharfun);
|
|
|
1167 write_c_string ("...", printcharfun);
|
|
|
1168 UNGCPRO;
|
|
|
1169 break;
|
|
|
1170 }
|
|
|
1171 }
|
|
|
1172
|
|
|
1173 GCPRO2 (obj, printcharfun);
|
|
|
1174 if (LHEADER_IMPLEMENTATION (lheader)->printer)
|
|
|
1175 ((LHEADER_IMPLEMENTATION (lheader)->printer)
|
|
|
1176 (obj, printcharfun, escapeflag));
|
|
|
1177 else
|
|
|
1178 default_object_printer (obj, printcharfun, escapeflag);
|
|
|
1179 UNGCPRO;
|
|
|
1180 break;
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 default:
|
|
|
1184 {
|
|
|
1185 #ifdef ERROR_CHECK_TYPECHECK
|
|
|
1186 abort ();
|
|
|
1187 #else /* not ERROR_CHECK_TYPECHECK */
|
|
|
1188 char buf[128];
|
|
|
1189 /* We're in trouble if this happens! */
|
|
|
1190 if (print_readably)
|
|
|
1191 error ("printing illegal data type #o%03o",
|
|
|
1192 (int) XTYPE (obj));
|
|
|
1193 write_c_string ("#<EMACS BUG: ILLEGAL DATATYPE ",
|
|
|
1194 printcharfun);
|
|
|
1195 sprintf (buf, "(#o%3o)", (int) XTYPE (obj));
|
|
|
1196 write_c_string (buf, printcharfun);
|
|
|
1197 write_c_string
|
|
|
1198 (" Save your buffers immediately and please report this bug>",
|
|
|
1199 printcharfun);
|
|
|
1200 #endif /* not ERROR_CHECK_TYPECHECK */
|
|
|
1201 break;
|
|
|
1202 }
|
|
|
1203 }
|
|
|
1204
|
|
|
1205 print_depth--;
|
|
|
1206 }
|
|
|
1207
|
|
|
1208
|
|
|
1209 #ifdef LISP_FLOAT_TYPE
|
|
|
1210 void
|
|
|
1211 print_float (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
1212 {
|
|
|
1213 char pigbuf[350]; /* see comments in float_to_string */
|
|
|
1214
|
|
|
1215 float_to_string (pigbuf, XFLOAT_DATA (obj));
|
|
|
1216 write_c_string (pigbuf, printcharfun);
|
|
|
1217 }
|
|
|
1218 #endif /* LISP_FLOAT_TYPE */
|
|
|
1219
|
|
|
1220 void
|
|
|
1221 print_symbol (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
1222 {
|
|
|
1223 /* This function can GC */
|
|
|
1224 /* #### Bug!! (intern "") isn't printed in some distinguished way */
|
|
|
1225 /* #### (the reader also loses on it) */
|
|
|
1226 struct Lisp_String *name = symbol_name (XSYMBOL (obj));
|
|
|
1227 Bytecount size = string_length (name);
|
|
|
1228 struct gcpro gcpro1, gcpro2;
|
|
|
1229
|
|
|
1230 if (!escapeflag)
|
|
|
1231 {
|
|
|
1232 /* This deals with GC-relocation */
|
|
|
1233 Lisp_Object nameobj;
|
|
|
1234 XSETSTRING (nameobj, name);
|
|
|
1235 output_string (printcharfun, 0, nameobj, 0, size);
|
|
|
1236 return;
|
|
|
1237 }
|
|
|
1238 GCPRO2 (obj, printcharfun);
|
|
|
1239
|
|
|
1240 /* If we print an uninterned symbol as part of a complex object and
|
|
|
1241 the flag print-gensym is non-nil, prefix it with #n= to read the
|
|
|
1242 object back with the #n# reader syntax later if needed. */
|
|
|
1243 if (!NILP (Vprint_gensym)
|
|
|
1244 /* #### Test whether this produces a noticable slow-down for
|
|
|
1245 printing when print-gensym is non-nil. */
|
|
|
1246 && !EQ (obj, oblookup (Vobarray,
|
|
|
1247 string_data (symbol_name (XSYMBOL (obj))),
|
|
|
1248 string_length (symbol_name (XSYMBOL (obj))))))
|
|
|
1249 {
|
|
|
1250 if (print_depth > 1)
|
|
|
1251 {
|
|
|
1252 Lisp_Object tem = Fassq (obj, Vprint_gensym_alist);
|
|
|
1253 if (CONSP (tem))
|
|
|
1254 {
|
|
|
1255 write_char_internal ("#", printcharfun);
|
|
|
1256 print_internal (XCDR (tem), printcharfun, escapeflag);
|
|
|
1257 write_char_internal ("#", printcharfun);
|
|
|
1258 return;
|
|
|
1259 }
|
|
|
1260 else
|
|
|
1261 {
|
|
|
1262 if (CONSP (Vprint_gensym_alist))
|
|
|
1263 {
|
|
|
1264 /* Vprint_gensym_alist is exposed to Lisp, so we
|
|
|
1265 have to be careful. */
|
|
|
1266 CHECK_CONS (XCAR (Vprint_gensym_alist));
|
|
|
1267 CHECK_INT (XCDR (XCAR (Vprint_gensym_alist)));
|
|
|
1268 XSETINT (tem, XINT (XCDR (XCAR (Vprint_gensym_alist))) + 1);
|
|
|
1269 }
|
|
|
1270 else
|
|
|
1271 XSETINT (tem, 1);
|
|
|
1272 Vprint_gensym_alist = Fcons (Fcons (obj, tem), Vprint_gensym_alist);
|
|
|
1273
|
|
|
1274 write_char_internal ("#", printcharfun);
|
|
|
1275 print_internal (tem, printcharfun, escapeflag);
|
|
|
1276 write_char_internal ("=", printcharfun);
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279 write_c_string ("#:", printcharfun);
|
|
|
1280 }
|
|
|
1281
|
|
|
1282 /* Does it look like an integer or a float? */
|
|
|
1283 {
|
|
|
1284 Bufbyte *data = string_data (name);
|
|
|
1285 Bytecount confusing = 0;
|
|
|
1286
|
|
|
1287 if (size == 0)
|
|
|
1288 goto not_yet_confused; /* Really confusing */
|
|
|
1289 else if (isdigit (data[0]))
|
|
|
1290 confusing = 0;
|
|
|
1291 else if (size == 1)
|
|
|
1292 goto not_yet_confused;
|
|
|
1293 else if (data[0] == '-' || data[0] == '+')
|
|
|
1294 confusing = 1;
|
|
|
1295 else
|
|
|
1296 goto not_yet_confused;
|
|
|
1297
|
|
|
1298 for (; confusing < size; confusing++)
|
|
|
1299 {
|
|
|
1300 if (!isdigit (data[confusing]))
|
|
|
1301 {
|
|
|
1302 confusing = 0;
|
|
|
1303 break;
|
|
|
1304 }
|
|
|
1305 }
|
|
|
1306 not_yet_confused:
|
|
|
1307
|
|
|
1308 #ifdef LISP_FLOAT_TYPE
|
|
|
1309 if (!confusing)
|
|
|
1310 /* #### Ugh, this is needlessly complex and slow for what we
|
|
|
1311 need here. It might be a good idea to copy equivalent code
|
|
|
1312 from FSF. --hniksic */
|
|
|
1313 confusing = isfloat_string ((char *) data);
|
|
|
1314 #endif
|
|
|
1315 if (confusing)
|
|
|
1316 write_char_internal ("\\", printcharfun);
|
|
|
1317 }
|
|
|
1318
|
|
|
1319 {
|
|
|
1320 Lisp_Object nameobj;
|
|
|
1321 Bytecount i;
|
|
|
1322 Bytecount last = 0;
|
|
|
1323
|
|
|
1324 XSETSTRING (nameobj, name);
|
|
|
1325 for (i = 0; i < size; i++)
|
|
|
1326 {
|
|
|
1327 switch (string_byte (name, i))
|
|
|
1328 {
|
|
|
1329 case 0: case 1: case 2: case 3:
|
|
|
1330 case 4: case 5: case 6: case 7:
|
|
|
1331 case 8: case 9: case 10: case 11:
|
|
|
1332 case 12: case 13: case 14: case 15:
|
|
|
1333 case 16: case 17: case 18: case 19:
|
|
|
1334 case 20: case 21: case 22: case 23:
|
|
|
1335 case 24: case 25: case 26: case 27:
|
|
|
1336 case 28: case 29: case 30: case 31:
|
|
|
1337 case ' ': case '\"': case '\\': case '\'':
|
|
|
1338 case ';': case '#' : case '(' : case ')':
|
|
|
1339 case ',': case '.' : case '`' :
|
|
|
1340 case '[': case ']' : case '?' :
|
|
|
1341 if (i > last)
|
|
|
1342 output_string (printcharfun, 0, nameobj, last, i - last);
|
|
|
1343 write_char_internal ("\\", printcharfun);
|
|
|
1344 last = i;
|
|
|
1345 }
|
|
|
1346 }
|
|
|
1347 output_string (printcharfun, 0, nameobj, last, size - last);
|
|
|
1348 }
|
|
|
1349 UNGCPRO;
|
|
|
1350 }
|
|
|
1351
|
|
|
1352 /* #ifdef DEBUG_XEMACS */
|
|
|
1353
|
|
|
1354 /* I don't like seeing `Note: Strange doc (not fboundp) for function
|
|
|
1355 alternate-debugging-output @ 429542' -slb */
|
|
|
1356 /* #### Eek! Any clue how to get rid of it? In fact, how about
|
|
|
1357 getting rid of this function altogether? Does anything actually
|
|
|
1358 *use* it? --hniksic */
|
|
|
1359
|
|
|
1360 static int alternate_do_pointer;
|
|
|
1361 static char alternate_do_string[5000];
|
|
|
1362
|
|
|
1363 DEFUN ("alternate-debugging-output", Falternate_debugging_output, 1, 1, 0, /*
|
|
|
1364 Append CHARACTER to the array `alternate_do_string'.
|
|
|
1365 This can be used in place of `external-debugging-output' as a function
|
|
|
1366 to be passed to `print'. Before calling `print', set `alternate_do_pointer'
|
|
|
1367 to 0.
|
|
|
1368 */
|
|
|
1369 (character))
|
|
|
1370 {
|
|
|
1371 Bufbyte str[MAX_EMCHAR_LEN];
|
|
|
1372 Bytecount len;
|
|
|
1373 int extlen;
|
|
|
1374 CONST Extbyte *extptr;
|
|
|
1375
|
|
|
1376 CHECK_CHAR_COERCE_INT (character);
|
|
|
1377 len = set_charptr_emchar (str, XCHAR (character));
|
|
|
1378 GET_CHARPTR_EXT_DATA_ALLOCA (str, len, FORMAT_TERMINAL, extptr, extlen);
|
|
|
1379 memcpy (alternate_do_string + alternate_do_pointer, extptr, extlen);
|
|
|
1380 alternate_do_pointer += extlen;
|
|
|
1381 alternate_do_string[alternate_do_pointer] = 0;
|
|
|
1382 return character;
|
|
|
1383 }
|
|
|
1384 /* #endif / * DEBUG_XEMACS */
|
|
|
1385
|
|
|
1386 DEFUN ("external-debugging-output", Fexternal_debugging_output, 1, 3, 0, /*
|
|
|
1387 Write CHAR-OR-STRING to stderr or stdout.
|
|
|
1388 If optional arg STDOUT-P is non-nil, write to stdout; otherwise, write
|
|
|
1389 to stderr. You can use this function to write directly to the terminal.
|
|
|
1390 This function can be used as the STREAM argument of Fprint() or the like.
|
|
|
1391
|
|
|
1392 If you have opened a termscript file (using `open-termscript'), then
|
|
|
1393 the output also will be logged to this file.
|
|
|
1394 */
|
|
|
1395 (char_or_string, stdout_p, device))
|
|
|
1396 {
|
|
|
1397 FILE *file = 0;
|
|
|
1398 struct console *con = 0;
|
|
|
1399
|
|
|
1400 if (NILP (device))
|
|
|
1401 {
|
|
|
1402 if (!NILP (stdout_p))
|
|
|
1403 file = stdout;
|
|
|
1404 else
|
|
|
1405 file = stderr;
|
|
|
1406 }
|
|
|
1407 else
|
|
|
1408 {
|
|
|
1409 CHECK_LIVE_DEVICE (device);
|
|
|
1410 if (!DEVICE_TTY_P (XDEVICE (device)) &&
|
|
|
1411 !DEVICE_STREAM_P (XDEVICE (device)))
|
|
|
1412 signal_simple_error ("Must be tty or stream device", device);
|
|
|
1413 con = XCONSOLE (DEVICE_CONSOLE (XDEVICE (device)));
|
|
|
1414 if (DEVICE_TTY_P (XDEVICE (device)))
|
|
|
1415 file = 0;
|
|
|
1416 else if (!NILP (stdout_p))
|
|
|
1417 file = CONSOLE_STREAM_DATA (con)->out;
|
|
|
1418 else
|
|
|
1419 file = CONSOLE_STREAM_DATA (con)->err;
|
|
|
1420 }
|
|
|
1421
|
|
|
1422 if (STRINGP (char_or_string))
|
|
|
1423 write_string_to_stdio_stream (file, con,
|
|
|
1424 XSTRING_DATA (char_or_string),
|
|
|
1425 0, XSTRING_LENGTH (char_or_string),
|
|
|
1426 FORMAT_TERMINAL);
|
|
|
1427 else
|
|
|
1428 {
|
|
|
1429 Bufbyte str[MAX_EMCHAR_LEN];
|
|
|
1430 Bytecount len;
|
|
|
1431
|
|
|
1432 CHECK_CHAR_COERCE_INT (char_or_string);
|
|
|
1433 len = set_charptr_emchar (str, XCHAR (char_or_string));
|
|
|
1434 write_string_to_stdio_stream (file, con, str, 0, len, FORMAT_TERMINAL);
|
|
|
1435 }
|
|
|
1436
|
|
|
1437 return char_or_string;
|
|
|
1438 }
|
|
|
1439
|
|
|
1440 DEFUN ("open-termscript", Fopen_termscript, 1, 1, "FOpen termscript file: ", /*
|
|
|
1441 Start writing all terminal output to FILE as well as the terminal.
|
|
|
1442 FILE = nil means just close any termscript file currently open.
|
|
|
1443 */
|
|
|
1444 (file))
|
|
|
1445 {
|
|
|
1446 /* This function can GC */
|
|
|
1447 if (termscript != 0)
|
|
|
1448 fclose (termscript);
|
|
|
1449 termscript = 0;
|
|
|
1450
|
|
|
1451 if (! NILP (file))
|
|
|
1452 {
|
|
|
1453 file = Fexpand_file_name (file, Qnil);
|
|
|
1454 termscript = fopen ((char *) XSTRING_DATA (file), "w");
|
|
|
1455 if (termscript == NULL)
|
|
|
1456 report_file_error ("Opening termscript", list1 (file));
|
|
|
1457 }
|
|
|
1458 return Qnil;
|
|
|
1459 }
|
|
|
1460
|
|
|
1461 #if 1
|
|
|
1462 /* Debugging kludge -- unbuffered */
|
|
|
1463 static int debug_print_length = 50;
|
|
|
1464 static int debug_print_level = 15;
|
|
|
1465
|
|
|
1466 static void
|
|
|
1467 debug_print_no_newline (Lisp_Object debug_print_obj)
|
|
|
1468 {
|
|
|
1469 /* This function can GC */
|
|
|
1470 int old_print_readably = print_readably;
|
|
|
1471 int old_print_depth = print_depth;
|
|
|
1472 Lisp_Object old_print_length = Vprint_length;
|
|
|
1473 Lisp_Object old_print_level = Vprint_level;
|
|
|
1474 Lisp_Object old_inhibit_quit = Vinhibit_quit;
|
|
|
1475 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1476 GCPRO3 (old_print_level, old_print_length, old_inhibit_quit);
|
|
|
1477
|
|
|
1478 if (gc_in_progress)
|
|
|
1479 stderr_out ("** gc-in-progress! Bad idea to print anything! **\n");
|
|
|
1480
|
|
|
1481 print_depth = 0;
|
|
|
1482 print_readably = 0;
|
|
|
1483 print_unbuffered++;
|
|
|
1484 /* Could use unwind-protect, but why bother? */
|
|
|
1485 if (debug_print_length > 0)
|
|
|
1486 Vprint_length = make_int (debug_print_length);
|
|
|
1487 if (debug_print_level > 0)
|
|
|
1488 Vprint_level = make_int (debug_print_level);
|
|
|
1489 print_internal (debug_print_obj, Qexternal_debugging_output, 1);
|
|
|
1490 Vinhibit_quit = old_inhibit_quit;
|
|
|
1491 Vprint_level = old_print_level;
|
|
|
1492 Vprint_length = old_print_length;
|
|
|
1493 print_depth = old_print_depth;
|
|
|
1494 print_readably = old_print_readably;
|
|
|
1495 print_unbuffered--;
|
|
|
1496 UNGCPRO;
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 void
|
|
|
1500 debug_print (Lisp_Object debug_print_obj)
|
|
|
1501 {
|
|
|
1502 debug_print_no_newline (debug_print_obj);
|
|
|
1503 stderr_out ("\n");
|
|
|
1504 fflush (stderr);
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 /* Debugging kludge -- unbuffered */
|
|
|
1508 /* This function provided for the benefit of the debugger. */
|
|
|
1509 void debug_backtrace (void);
|
|
|
1510 void
|
|
|
1511 debug_backtrace (void)
|
|
|
1512 {
|
|
|
1513 /* This function can GC */
|
|
|
1514 int old_print_readably = print_readably;
|
|
|
1515 int old_print_depth = print_depth;
|
|
|
1516 Lisp_Object old_print_length = Vprint_length;
|
|
|
1517 Lisp_Object old_print_level = Vprint_level;
|
|
|
1518 Lisp_Object old_inhibit_quit = Vinhibit_quit;
|
|
|
1519
|
|
|
1520 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
1521 GCPRO3 (old_print_level, old_print_length, old_inhibit_quit);
|
|
|
1522
|
|
|
1523 if (gc_in_progress)
|
|
|
1524 stderr_out ("** gc-in-progress! Bad idea to print anything! **\n");
|
|
|
1525
|
|
|
1526 print_depth = 0;
|
|
|
1527 print_readably = 0;
|
|
|
1528 print_unbuffered++;
|
|
|
1529 /* Could use unwind-protect, but why bother? */
|
|
|
1530 if (debug_print_length > 0)
|
|
|
1531 Vprint_length = make_int (debug_print_length);
|
|
|
1532 if (debug_print_level > 0)
|
|
|
1533 Vprint_level = make_int (debug_print_level);
|
|
|
1534
|
|
|
1535 Fbacktrace (Qexternal_debugging_output, Qt);
|
|
|
1536 stderr_out ("\n");
|
|
|
1537 fflush (stderr);
|
|
|
1538
|
|
|
1539 Vinhibit_quit = old_inhibit_quit;
|
|
|
1540 Vprint_level = old_print_level;
|
|
|
1541 Vprint_length = old_print_length;
|
|
|
1542 print_depth = old_print_depth;
|
|
|
1543 print_readably = old_print_readably;
|
|
|
1544 print_unbuffered--;
|
|
|
1545
|
|
|
1546 UNGCPRO;
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 void
|
|
|
1550 debug_short_backtrace (int length)
|
|
|
1551 {
|
|
|
1552 int first = 1;
|
|
|
1553 struct backtrace *bt = backtrace_list;
|
|
|
1554 stderr_out (" [");
|
|
|
1555 fflush (stderr);
|
|
|
1556 while (length > 0 && bt)
|
|
|
1557 {
|
|
|
1558 if (!first)
|
|
|
1559 {
|
|
|
1560 stderr_out (", ");
|
|
|
1561 fflush (stderr);
|
|
|
1562 }
|
|
|
1563 if (COMPILED_FUNCTIONP (*bt->function))
|
|
|
1564 {
|
|
|
1565 #if defined(COMPILED_FUNCTION_ANNOTATION_HACK)
|
|
|
1566 Lisp_Object ann =
|
|
|
1567 compiled_function_annotation (XCOMPILED_FUNCTION (*bt->function));
|
|
|
1568 #else
|
|
|
1569 Lisp_Object ann = Qnil;
|
|
|
1570 #endif
|
|
|
1571 if (!NILP (ann))
|
|
|
1572 {
|
|
|
1573 stderr_out ("<compiled-function from ");
|
|
|
1574 fflush (stderr);
|
|
|
1575 debug_print_no_newline (ann);
|
|
|
1576 stderr_out (">");
|
|
|
1577 fflush (stderr);
|
|
|
1578 }
|
|
|
1579 else
|
|
|
1580 {
|
|
|
1581 stderr_out ("<compiled-function of unknown origin>");
|
|
|
1582 fflush (stderr);
|
|
|
1583 }
|
|
|
1584 }
|
|
|
1585 else
|
|
|
1586 debug_print_no_newline (*bt->function);
|
|
|
1587 first = 0;
|
|
|
1588 length--;
|
|
|
1589 bt = bt->next;
|
|
|
1590 }
|
|
|
1591 stderr_out ("]\n");
|
|
|
1592 fflush (stderr);
|
|
|
1593 }
|
|
|
1594
|
|
|
1595 #endif /* debugging kludge */
|
|
|
1596
|
|
|
1597
|
|
|
1598 void
|
|
|
1599 syms_of_print (void)
|
|
|
1600 {
|
|
|
1601 defsymbol (&Qstandard_output, "standard-output");
|
|
|
1602
|
|
|
1603 defsymbol (&Qprint_length, "print-length");
|
|
|
1604
|
|
|
1605 defsymbol (&Qprint_string_length, "print-string-length");
|
|
|
1606
|
|
|
1607 defsymbol (&Qdisplay_error, "display-error");
|
|
|
1608 defsymbol (&Qprint_message_label, "print-message-label");
|
|
|
1609
|
|
|
1610 DEFSUBR (Fprin1);
|
|
|
1611 DEFSUBR (Fprin1_to_string);
|
|
|
1612 DEFSUBR (Fprinc);
|
|
|
1613 DEFSUBR (Fprint);
|
|
|
1614 DEFSUBR (Ferror_message_string);
|
|
|
1615 DEFSUBR (Fdisplay_error);
|
|
|
1616 DEFSUBR (Fterpri);
|
|
|
1617 DEFSUBR (Fwrite_char);
|
|
|
1618 DEFSUBR (Falternate_debugging_output);
|
|
|
1619 DEFSUBR (Fexternal_debugging_output);
|
|
|
1620 DEFSUBR (Fopen_termscript);
|
|
|
1621 defsymbol (&Qexternal_debugging_output, "external-debugging-output");
|
|
|
1622 DEFSUBR (Fwith_output_to_temp_buffer);
|
|
|
1623 }
|
|
|
1624
|
|
|
1625 void
|
|
|
1626 reinit_vars_of_print (void)
|
|
|
1627 {
|
|
|
1628 alternate_do_pointer = 0;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 void
|
|
|
1632 vars_of_print (void)
|
|
|
1633 {
|
|
|
1634 reinit_vars_of_print ();
|
|
|
1635
|
|
|
1636 DEFVAR_LISP ("standard-output", &Vstandard_output /*
|
|
|
1637 Output stream `print' uses by default for outputting a character.
|
|
|
1638 This may be any function of one argument.
|
|
|
1639 It may also be a buffer (output is inserted before point)
|
|
|
1640 or a marker (output is inserted and the marker is advanced)
|
|
|
1641 or the symbol t (output appears in the minibuffer line).
|
|
|
1642 */ );
|
|
|
1643 Vstandard_output = Qt;
|
|
|
1644
|
|
|
1645 #ifdef LISP_FLOAT_TYPE
|
|
|
1646 DEFVAR_LISP ("float-output-format", &Vfloat_output_format /*
|
|
|
1647 The format descriptor string that lisp uses to print floats.
|
|
|
1648 This is a %-spec like those accepted by `printf' in C,
|
|
|
1649 but with some restrictions. It must start with the two characters `%.'.
|
|
|
1650 After that comes an integer precision specification,
|
|
|
1651 and then a letter which controls the format.
|
|
|
1652 The letters allowed are `e', `f' and `g'.
|
|
|
1653 Use `e' for exponential notation "DIG.DIGITSeEXPT"
|
|
|
1654 Use `f' for decimal point notation "DIGITS.DIGITS".
|
|
|
1655 Use `g' to choose the shorter of those two formats for the number at hand.
|
|
|
1656 The precision in any of these cases is the number of digits following
|
|
|
1657 the decimal point. With `f', a precision of 0 means to omit the
|
|
|
1658 decimal point. 0 is not allowed with `f' or `g'.
|
|
|
1659
|
|
|
1660 A value of nil means to use `%.16g'.
|
|
|
1661
|
|
|
1662 Regardless of the value of `float-output-format', a floating point number
|
|
|
1663 will never be printed in such a way that it is ambiguous with an integer;
|
|
|
1664 that is, a floating-point number will always be printed with a decimal
|
|
|
1665 point and/or an exponent, even if the digits following the decimal point
|
|
|
1666 are all zero. This is to preserve read-equivalence.
|
|
|
1667 */ );
|
|
|
1668 Vfloat_output_format = Qnil;
|
|
|
1669 #endif /* LISP_FLOAT_TYPE */
|
|
|
1670
|
|
|
1671 DEFVAR_LISP ("print-length", &Vprint_length /*
|
|
|
1672 Maximum length of list or vector to print before abbreviating.
|
|
|
1673 A value of nil means no limit.
|
|
|
1674 */ );
|
|
|
1675 Vprint_length = Qnil;
|
|
|
1676
|
|
|
1677 DEFVAR_LISP ("print-string-length", &Vprint_string_length /*
|
|
|
1678 Maximum length of string to print before abbreviating.
|
|
|
1679 A value of nil means no limit.
|
|
|
1680 */ );
|
|
|
1681 Vprint_string_length = Qnil;
|
|
|
1682
|
|
|
1683 DEFVAR_LISP ("print-level", &Vprint_level /*
|
|
|
1684 Maximum depth of list nesting to print before abbreviating.
|
|
|
1685 A value of nil means no limit.
|
|
|
1686 */ );
|
|
|
1687 Vprint_level = Qnil;
|
|
|
1688
|
|
|
1689 DEFVAR_BOOL ("print-escape-newlines", &print_escape_newlines /*
|
|
|
1690 Non-nil means print newlines in strings as backslash-n.
|
|
|
1691 */ );
|
|
|
1692 print_escape_newlines = 0;
|
|
|
1693
|
|
|
1694 DEFVAR_BOOL ("print-readably", &print_readably /*
|
|
|
1695 If non-nil, then all objects will be printed in a readable form.
|
|
|
1696 If an object has no readable representation, then an error is signalled.
|
|
|
1697 When print-readably is true, compiled-function objects will be written in
|
|
|
1698 #[...] form instead of in #<compiled-function [...]> form, and two-element
|
|
|
1699 lists of the form (quote object) will be written as the equivalent 'object.
|
|
|
1700 Do not SET this variable; bind it instead.
|
|
|
1701 */ );
|
|
|
1702 print_readably = 0;
|
|
|
1703
|
|
|
1704 /* #### I think this should default to t. But we'd better wait
|
|
|
1705 until we see that it works out. */
|
|
|
1706 DEFVAR_LISP ("print-gensym", &Vprint_gensym /*
|
|
|
1707 If non-nil, then uninterned symbols will be printed specially.
|
|
|
1708 Uninterned symbols are those which are not present in `obarray', that is,
|
|
|
1709 those which were made with `make-symbol' or by calling `intern' with a
|
|
|
1710 second argument.
|
|
|
1711
|
|
|
1712 When print-gensym is true, such symbols will be preceded by "#:",
|
|
|
1713 which causes the reader to create a new symbol instead of interning
|
|
|
1714 and returning an existing one. Beware: the #: syntax creates a new
|
|
|
1715 symbol each time it is seen, so if you print an object which contains
|
|
|
1716 two pointers to the same uninterned symbol, `read' will not duplicate
|
|
|
1717 that structure.
|
|
|
1718
|
|
|
1719 If the value of `print-gensym' is a cons cell, then in addition
|
|
|
1720 refrain from clearing `print-gensym-alist' on entry to and exit from
|
|
|
1721 printing functions, so that the use of #...# and #...= can carry over
|
|
|
1722 for several separately printed objects.
|
|
|
1723 */ );
|
|
|
1724 Vprint_gensym = Qnil;
|
|
|
1725
|
|
|
1726 DEFVAR_LISP ("print-gensym-alist", &Vprint_gensym_alist /*
|
|
|
1727 Association list of elements (GENSYM . N) to guide use of #N# and #N=.
|
|
|
1728 In each element, GENSYM is an uninterned symbol that has been associated
|
|
|
1729 with #N= for the specified value of N.
|
|
|
1730 */ );
|
|
|
1731 Vprint_gensym_alist = Qnil;
|
|
|
1732
|
|
|
1733 DEFVAR_LISP ("print-message-label", &Vprint_message_label /*
|
|
|
1734 Label for minibuffer messages created with `print'. This should
|
|
|
1735 generally be bound with `let' rather than set. (See `display-message'.)
|
|
|
1736 */ );
|
|
|
1737 Vprint_message_label = Qprint;
|
|
|
1738 }
|
