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0
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1 /* Output like sprintf to a buffer of specified size.
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2 Also takes args differently: pass one pointer to an array of strings
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3 in addition to the format string which is separate.
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4 Copyright (C) 1995 Free Software Foundation, Inc.
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5 Rewritten by mly to use varargs.h.
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6 Rewritten from scratch by Ben Wing (February 1995) for Mule; expanded
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7 to full printf spec.
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8
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9 This file is part of XEmacs.
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10
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11 XEmacs is free software; you can redistribute it and/or modify it
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12 under the terms of the GNU General Public License as published by the
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13 Free Software Foundation; either version 2, or (at your option) any
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14 later version.
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15
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16 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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19 for more details.
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20
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21 You should have received a copy of the GNU General Public License
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22 along with XEmacs; see the file COPYING. If not, write to
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23 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 Boston, MA 02111-1307, USA. */
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25
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26 /* Synched up with: Rewritten. Not in FSF. */
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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 "buffer.h"
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32 #include "lstream.h"
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33
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34 static CONST char *valid_flags = "-+ #0";
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35
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36 static CONST char *valid_converters = "diouxXfeEgGcsS";
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37 static CONST char *int_converters = "dic";
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38 static CONST char *unsigned_int_converters = "ouxX";
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39 static CONST char *double_converters = "feEgG";
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40 static CONST char *string_converters = "sS";
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41
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185
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42 typedef struct printf_spec printf_spec;
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0
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43 struct printf_spec
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44 {
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45 int argnum; /* which argument does this spec want? This is one-based:
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46 The first argument given is numbered 1, the second
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47 is 2, etc. This is to handle %##$x-type specs. */
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48 int minwidth;
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49 int precision;
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74
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50 unsigned int minus_flag:1;
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51 unsigned int plus_flag:1;
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52 unsigned int space_flag:1;
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53 unsigned int number_flag:1;
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54 unsigned int zero_flag:1;
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55 unsigned int h_flag:1;
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56 unsigned int l_flag:1;
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0
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57 char converter; /* converter character or 0 for dummy marker
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58 indicating literal text at the end of the
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59 specification */
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60 Bytecount text_before; /* position of the first character of the
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61 block of literal text before this spec */
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62 Bytecount text_before_len; /* length of that text */
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63 };
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64
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185
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65 typedef union printf_arg printf_arg;
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0
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66 union printf_arg
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67 {
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68 int i;
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69 unsigned int ui;
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70 long l;
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71 unsigned long ul;
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72 double d;
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73 Bufbyte *bp;
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74 };
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75
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76 /* We maintain a list of all the % specs in the specification,
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77 along with the offset and length of the block of literal text
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78 before each spec. In addition, we have a "dummy" spec that
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79 represents all the literal text at the end of the specification.
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80 Its converter is 0. */
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81
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82 typedef struct
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83 {
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84 Dynarr_declare (struct printf_spec);
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85 } printf_spec_dynarr;
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86
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87 typedef struct
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88 {
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89 Dynarr_declare (union printf_arg);
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90 } printf_arg_dynarr;
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91
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92 /* Append STRING (of length LEN) to STREAM. MINLEN is the minimum field
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93 width. If MINUS_FLAG is set, left-justify the string in its field;
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94 otherwise, right-justify. If ZERO_FLAG is set, pad with 0's; otherwise
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95 pad with spaces. If MAXLEN is non-negative, the string is first
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96 truncated to that many character.
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97
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98 Note that MINLEN and MAXLEN are Charcounts but LEN is a Bytecount. */
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99
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100 static void
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101 doprnt_1 (Lisp_Object stream, CONST Bufbyte *string, Bytecount len,
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102 Charcount minlen, Charcount maxlen, int minus_flag, int zero_flag)
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103 {
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104 Charcount cclen;
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105 Bufbyte pad;
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106 Lstream *lstr = XLSTREAM (stream);
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107
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108 cclen = bytecount_to_charcount (string, len);
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109
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110 if (zero_flag)
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111 pad = '0';
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112 else
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113 pad = ' ';
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114
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115 /* Padding at beginning to right-justify ... */
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116 if (minlen > cclen && !minus_flag)
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117 {
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118 int to_add = minlen - cclen;
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119 while (to_add > 0)
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120 {
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121 Lstream_putc (lstr, pad);
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122 to_add--;
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123 }
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124 }
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185
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125
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0
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126 if (maxlen >= 0)
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127 len = charcount_to_bytecount (string, min (maxlen, cclen));
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128 Lstream_write (lstr, string, len);
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129
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130 /* Padding at end to left-justify ... */
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131 if (minlen > cclen && minus_flag)
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132 {
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133 int to_add = minlen - cclen;
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134 while (to_add > 0)
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135 {
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136 Lstream_putc (lstr, pad);
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137 to_add--;
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138 }
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139 }
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140 }
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141
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142 static CONST Bufbyte *
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143 parse_off_posnum (CONST Bufbyte *start, CONST Bufbyte *end, int *returned_num)
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144 {
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145 Bufbyte arg_convert[100];
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146 REGISTER Bufbyte *arg_ptr = arg_convert;
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185
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147
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0
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148 *returned_num = -1;
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149 while (start != end && isdigit (*start))
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150 {
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151 if (arg_ptr - arg_convert >= sizeof (arg_convert) - 1)
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152 error ("Format converter number too large");
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153 *arg_ptr++ = *start++;
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154 }
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155 *arg_ptr = '\0';
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156 if (arg_convert != arg_ptr)
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157 *returned_num = atoi ((char *) arg_convert);
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158 return start;
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159 }
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160
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161 #define NEXT_ASCII_BYTE(ch) \
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162 do { \
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163 if (fmt == fmt_end) \
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164 error ("Premature end of format string"); \
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165 ch = *fmt; \
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166 if (ch >= 0200) \
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167 error ("Non-ASCII character in format converter spec"); \
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168 fmt++; \
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169 } while (0)
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170
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171 static printf_spec_dynarr *
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172 parse_doprnt_spec (CONST Bufbyte *format, Bytecount format_length)
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173 {
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174 CONST Bufbyte *fmt = format;
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175 CONST Bufbyte *fmt_end = format + format_length;
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185
|
176 printf_spec_dynarr *specs = Dynarr_new (printf_spec);
|
|
0
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177 int prev_argnum = 0;
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178
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|
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179 while (1)
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180 {
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181 struct printf_spec spec;
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182 CONST Bufbyte *text_end;
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183 Bufbyte ch;
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184
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185 memset (&spec, 0, sizeof (spec));
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186 if (fmt == fmt_end)
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187 return specs;
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188 text_end = (Bufbyte *) memchr (fmt, '%', fmt_end - fmt);
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|
189 if (!text_end)
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190 text_end = fmt_end;
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191 spec.text_before = fmt - format;
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192 spec.text_before_len = text_end - fmt;
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|
193 fmt = text_end;
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194 if (fmt != fmt_end)
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|
195 {
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196 fmt++; /* skip over % */
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197
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|
|
198 /* A % is special -- no arg number. According to ANSI specs,
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|
199 field width does not apply to %% conversion. */
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200 if (fmt != fmt_end && *fmt == '%')
|
|
|
201 {
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202 spec.converter = '%';
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203 Dynarr_add (specs, spec);
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204 fmt++;
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205 continue;
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206 }
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207
|
|
|
208 /* Is there a field number specifier? */
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|
|
209 {
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210 CONST Bufbyte *ptr;
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211 int fieldspec;
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212
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213 ptr = parse_off_posnum (fmt, fmt_end, &fieldspec);
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214 if (fieldspec > 0 && ptr != fmt_end && *ptr == '$')
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215 {
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216 /* There is a format specifier */
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|
217 prev_argnum = fieldspec;
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|
|
218 fmt = ptr + 1;
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219 }
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220 else
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|
221 prev_argnum++;
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|
222 spec.argnum = prev_argnum;
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|
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223 }
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224
|
|
|
225 /* Parse off any flags */
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226 NEXT_ASCII_BYTE (ch);
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|
|
227 while (strchr (valid_flags, ch))
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228 {
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229 switch (ch)
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|
|
230 {
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|
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231 case '-': spec.minus_flag = 1; break;
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|
|
232 case '+': spec.plus_flag = 1; break;
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|
233 case ' ': spec.space_flag = 1; break;
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|
|
234 case '#': spec.number_flag = 1; break;
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|
|
235 case '0': spec.zero_flag = 1; break;
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|
|
236 default: abort ();
|
|
|
237 }
|
|
|
238 NEXT_ASCII_BYTE (ch);
|
|
|
239 }
|
|
185
|
240
|
|
0
|
241 /* Parse off the minimum field width */
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|
|
242 fmt--; /* back up */
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|
|
243 fmt = parse_off_posnum (fmt, fmt_end, &spec.minwidth);
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|
|
244 if (spec.minwidth == -1)
|
|
|
245 spec.minwidth = 0;
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|
246
|
|
|
247 /* Parse off any precision specified */
|
|
|
248 NEXT_ASCII_BYTE (ch);
|
|
|
249 if (ch == '.')
|
|
|
250 {
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|
|
251 fmt = parse_off_posnum (fmt, fmt_end, &spec.precision);
|
|
|
252 if (spec.precision == -1)
|
|
|
253 spec.precision = 0;
|
|
|
254 NEXT_ASCII_BYTE (ch);
|
|
|
255 }
|
|
|
256 else
|
|
|
257 /* No precision specified */
|
|
|
258 spec.precision = -1;
|
|
|
259
|
|
|
260 /* Parse off h or l flag */
|
|
|
261 if (ch == 'h' || ch == 'l')
|
|
|
262 {
|
|
|
263 if (ch == 'h')
|
|
|
264 spec.h_flag = 1;
|
|
|
265 else
|
|
|
266 spec.l_flag = 1;
|
|
|
267 NEXT_ASCII_BYTE (ch);
|
|
|
268 }
|
|
|
269
|
|
|
270 if (!strchr (valid_converters, ch))
|
|
|
271 error ("Invalid converter character %c", ch);
|
|
|
272 spec.converter = ch;
|
|
|
273 }
|
|
|
274
|
|
|
275 if (spec.space_flag && spec.plus_flag)
|
|
|
276 spec.space_flag = 0;
|
|
|
277 if (spec.zero_flag && spec.space_flag)
|
|
|
278 spec.zero_flag = 0;
|
|
|
279
|
|
|
280 Dynarr_add (specs, spec);
|
|
|
281 }
|
|
|
282
|
|
|
283 RETURN_NOT_REACHED(specs) /* suppress compiler warning */
|
|
|
284 }
|
|
|
285
|
|
|
286 static int
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|
|
287 get_args_needed (printf_spec_dynarr *specs)
|
|
|
288 {
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|
|
289 int args_needed = 0;
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|
|
290 REGISTER int i;
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|
|
291
|
|
|
292 /* Figure out how many args are needed. This may be less than
|
|
|
293 the number of specs because a spec could be %% or could be
|
|
|
294 missing (literal text at end of format string) or there
|
|
|
295 could be specs where the field number is explicitly given.
|
|
|
296 We just look for the maximum argument number that's referenced. */
|
|
|
297
|
|
|
298 for (i = 0; i < Dynarr_length (specs); i++)
|
|
|
299 {
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|
|
300 char ch = Dynarr_at (specs, i).converter;
|
|
|
301 if (ch && ch != '%')
|
|
|
302 {
|
|
|
303 int argnum = Dynarr_at (specs, i).argnum;
|
|
|
304 if (argnum > args_needed)
|
|
|
305 args_needed = argnum;
|
|
|
306 }
|
|
|
307 }
|
|
|
308
|
|
|
309 return args_needed;
|
|
|
310 }
|
|
|
311
|
|
|
312 static printf_arg_dynarr *
|
|
|
313 get_doprnt_args (printf_spec_dynarr *specs, va_list vargs)
|
|
|
314 {
|
|
185
|
315 printf_arg_dynarr *args = Dynarr_new (printf_arg);
|
|
0
|
316 union printf_arg arg;
|
|
|
317 REGISTER int i;
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|
|
318 int args_needed = get_args_needed (specs);
|
|
|
319
|
|
|
320 memset (&arg, 0, sizeof (union printf_arg));
|
|
|
321 for (i = 1; i <= args_needed; i++)
|
|
|
322 {
|
|
|
323 int j;
|
|
|
324 char ch;
|
|
|
325 struct printf_spec *spec = 0;
|
|
|
326
|
|
|
327 for (j = 0; j < Dynarr_length (specs); j++)
|
|
|
328 {
|
|
|
329 spec = Dynarr_atp (specs, j);
|
|
|
330 if (spec->argnum == i)
|
|
|
331 break;
|
|
|
332 }
|
|
|
333
|
|
|
334 if (j == Dynarr_length (specs))
|
|
|
335 error ("No conversion spec for argument %d", i);
|
|
|
336
|
|
|
337 ch = spec->converter;
|
|
|
338
|
|
|
339 /* int even if ch == 'c': "the type used in va_arg is supposed to
|
|
|
340 match the actual type **after default promotions**." */
|
|
|
341
|
|
|
342 if (strchr (int_converters, ch))
|
|
|
343 {
|
|
|
344 if (spec->h_flag)
|
|
|
345 arg.i = va_arg (vargs, short);
|
|
|
346 else if (spec->l_flag)
|
|
|
347 arg.l = va_arg (vargs, long);
|
|
|
348 else
|
|
|
349 arg.i = va_arg (vargs, int);
|
|
|
350 }
|
|
|
351 else if (strchr (unsigned_int_converters, ch))
|
|
|
352 {
|
|
|
353 if (spec->h_flag)
|
|
|
354 arg.ui = va_arg (vargs, unsigned short);
|
|
|
355 else if (spec->l_flag)
|
|
|
356 arg.ul = va_arg (vargs, unsigned long);
|
|
|
357 else
|
|
|
358 arg.ui = va_arg (vargs, unsigned int);
|
|
|
359 }
|
|
|
360 else if (strchr (double_converters, ch))
|
|
|
361 arg.d = va_arg (vargs, double);
|
|
|
362 else if (strchr (string_converters, ch))
|
|
|
363 arg.bp = va_arg (vargs, Bufbyte *);
|
|
|
364 else abort ();
|
|
|
365
|
|
|
366 Dynarr_add (args, arg);
|
|
|
367 }
|
|
|
368
|
|
|
369 return args;
|
|
|
370 }
|
|
|
371
|
|
|
372 /* Generate output from a format-spec FORMAT, of length FORMAT_LENGTH.
|
|
|
373 Output goes in BUFFER, which has room for BUFSIZE bytes.
|
|
|
374 If the output does not fit, truncate it to fit.
|
|
|
375 Returns the number of bytes stored into BUFFER.
|
|
|
376 LARGS or VARGS points to the arguments, and NARGS says how many.
|
|
|
377 if LARGS is non-zero, it should be a pointer to NARGS worth of
|
|
|
378 Lisp arguments. Otherwise, VARGS should be a va_list referring
|
|
|
379 to the arguments. */
|
|
|
380
|
|
|
381 static Bytecount
|
|
|
382 emacs_doprnt_1 (Lisp_Object stream, CONST Bufbyte *format_nonreloc,
|
|
|
383 Lisp_Object format_reloc, Bytecount format_length,
|
|
185
|
384 int nargs,
|
|
0
|
385 /* #### Gag me, gag me, gag me */
|
|
|
386 CONST Lisp_Object *largs, va_list vargs)
|
|
|
387 {
|
|
|
388 printf_spec_dynarr *specs = 0;
|
|
|
389 printf_arg_dynarr *args = 0;
|
|
|
390 REGISTER int i;
|
|
|
391 int init_byte_count = Lstream_byte_count (XLSTREAM (stream));
|
|
|
392
|
|
|
393 if (!NILP (format_reloc))
|
|
|
394 {
|
|
14
|
395 format_nonreloc = XSTRING_DATA (format_reloc);
|
|
|
396 format_length = XSTRING_LENGTH (format_reloc);
|
|
0
|
397 }
|
|
|
398 if (format_length < 0)
|
|
|
399 format_length = (Bytecount) strlen ((CONST char *) format_nonreloc);
|
|
|
400
|
|
|
401 specs = parse_doprnt_spec (format_nonreloc, format_length);
|
|
|
402 if (largs)
|
|
|
403 {
|
|
|
404 /* allow too many args for string, but not too few */
|
|
|
405 if (nargs < get_args_needed (specs))
|
|
|
406 signal_error (Qwrong_number_of_arguments,
|
|
|
407 list3 (Qformat,
|
|
|
408 make_int (nargs),
|
|
|
409 !NILP (format_reloc) ? format_reloc :
|
|
|
410 make_string (format_nonreloc, format_length)));
|
|
|
411 }
|
|
|
412 else
|
|
|
413 {
|
|
|
414 args = get_doprnt_args (specs, vargs);
|
|
|
415 }
|
|
|
416
|
|
|
417 for (i = 0; i < Dynarr_length (specs); i++)
|
|
|
418 {
|
|
|
419 struct printf_spec *spec = Dynarr_atp (specs, i);
|
|
|
420 char ch;
|
|
|
421
|
|
|
422 /* Copy the text before */
|
|
|
423 if (!NILP (format_reloc)) /* refetch in case of GC below */
|
|
14
|
424 format_nonreloc = XSTRING_DATA (format_reloc);
|
|
0
|
425 doprnt_1 (stream, format_nonreloc + spec->text_before,
|
|
|
426 spec->text_before_len, 0, -1, 0, 0);
|
|
|
427
|
|
|
428 ch = spec->converter;
|
|
|
429
|
|
|
430 if (!ch)
|
|
|
431 continue;
|
|
|
432
|
|
|
433 if (ch == '%')
|
|
|
434 {
|
|
|
435 doprnt_1 (stream, (Bufbyte *) &ch, 1, 0, -1, 0, 0);
|
|
|
436 continue;
|
|
|
437 }
|
|
|
438
|
|
|
439 if (largs && (spec->argnum < 1 || spec->argnum > nargs))
|
|
|
440 error ("Invalid repositioning argument %d", spec->argnum);
|
|
|
441
|
|
|
442 else if (ch == 'S' || ch == 's')
|
|
|
443 {
|
|
|
444 Bufbyte *string;
|
|
|
445 Bytecount string_len;
|
|
|
446
|
|
|
447 if (!largs)
|
|
|
448 {
|
|
|
449 string = Dynarr_at (args, spec->argnum - 1).bp;
|
|
185
|
450 /* error() can be called with null string arguments.
|
|
|
451 E.g., in fileio.c, the return value of strerror()
|
|
|
452 is never checked. We'll print (null), like some
|
|
|
453 printf implementations do. Would it be better (and safe)
|
|
|
454 to signal an error instead? Or should we just use the
|
|
|
455 empty string? -dkindred@cs.cmu.edu 8/1997
|
|
|
456 */
|
|
|
457 if (!string)
|
|
|
458 string = "(null)";
|
|
0
|
459 string_len = strlen ((char *) string);
|
|
|
460 }
|
|
|
461 else
|
|
|
462 {
|
|
|
463 Lisp_Object obj = largs[spec->argnum - 1];
|
|
|
464 struct Lisp_String *ls;
|
|
|
465
|
|
|
466 if (ch == 'S')
|
|
|
467 {
|
|
|
468 /* For `S', prin1 the argument and then treat like
|
|
|
469 a string. */
|
|
|
470 ls = XSTRING (Fprin1_to_string (obj, Qnil));
|
|
|
471 }
|
|
|
472 else if (STRINGP (obj))
|
|
|
473 ls = XSTRING (obj);
|
|
|
474 else if (SYMBOLP (obj))
|
|
|
475 ls = XSYMBOL (obj)->name;
|
|
|
476 else
|
|
|
477 {
|
|
|
478 /* convert to string using princ. */
|
|
|
479 ls = XSTRING (Fprin1_to_string (obj, Qt));
|
|
|
480 }
|
|
|
481 string = string_data (ls);
|
|
|
482 string_len = string_length (ls);
|
|
|
483 }
|
|
|
484
|
|
|
485 doprnt_1 (stream, string, string_len, spec->minwidth,
|
|
|
486 spec->precision, spec->minus_flag, spec->zero_flag);
|
|
|
487 }
|
|
|
488
|
|
|
489 else
|
|
|
490 {
|
|
|
491 /* Must be a number. */
|
|
|
492 union printf_arg arg;
|
|
|
493
|
|
|
494 if (!largs)
|
|
|
495 {
|
|
|
496 arg = Dynarr_at (args, spec->argnum - 1);
|
|
|
497 }
|
|
|
498 else
|
|
|
499 {
|
|
|
500 Lisp_Object obj = largs[spec->argnum - 1];
|
|
70
|
501 if (CHARP (obj))
|
|
|
502 CHECK_INT_COERCE_CHAR (obj);
|
|
0
|
503 if (!INT_OR_FLOATP (obj))
|
|
|
504 {
|
|
|
505 error ("format specifier %%%c doesn't match argument type",
|
|
|
506 ch);
|
|
|
507 }
|
|
|
508 else if (strchr (double_converters, ch))
|
|
|
509 arg.d = XFLOATINT (obj);
|
|
|
510 else
|
|
|
511 {
|
|
|
512 int val;
|
|
|
513
|
|
|
514 if (FLOATP (obj))
|
|
|
515 val = XINT (Ftruncate (obj));
|
|
|
516 else
|
|
|
517 val = XINT (obj);
|
|
|
518 if (strchr (unsigned_int_converters, ch))
|
|
|
519 {
|
|
|
520 if (spec->l_flag)
|
|
|
521 arg.ul = (unsigned long) val;
|
|
|
522 else
|
|
|
523 arg.ui = (unsigned int) val;
|
|
|
524 }
|
|
|
525 else
|
|
|
526 {
|
|
|
527 if (spec->l_flag)
|
|
|
528 arg.l = (long) val;
|
|
|
529 else
|
|
|
530 arg.i = val;
|
|
|
531 }
|
|
|
532 }
|
|
|
533 }
|
|
|
534
|
|
|
535
|
|
|
536 if (ch == 'c')
|
|
|
537 {
|
|
|
538 Emchar a;
|
|
|
539 Bytecount charlen;
|
|
|
540 Bufbyte charbuf[MAX_EMCHAR_LEN];
|
|
|
541
|
|
|
542 if (spec->l_flag)
|
|
|
543 a = (Emchar) arg.l;
|
|
|
544 else
|
|
|
545 a = (Emchar) arg.i;
|
|
185
|
546
|
|
0
|
547 if (!valid_char_p (a))
|
|
|
548 error ("invalid character value %d to %%c spec", a);
|
|
|
549
|
|
|
550 charlen = set_charptr_emchar (charbuf, a);
|
|
|
551 doprnt_1 (stream, charbuf, charlen, spec->minwidth,
|
|
|
552 -1, spec->minus_flag, spec->zero_flag);
|
|
|
553 }
|
|
|
554
|
|
|
555 else
|
|
|
556 {
|
|
|
557 char text_to_print[500];
|
|
|
558 char constructed_spec[100];
|
|
|
559
|
|
|
560 /* Partially reconstruct the spec and use sprintf() to
|
|
|
561 format the string. */
|
|
|
562
|
|
|
563 /* Make sure nothing stupid happens */
|
|
|
564 /* DO NOT REMOVE THE (int) CAST! Incorrect results will
|
|
|
565 follow! */
|
|
|
566 spec->precision = min (spec->precision,
|
|
|
567 (int) (sizeof (text_to_print) - 50));
|
|
|
568
|
|
|
569 constructed_spec[0] = 0;
|
|
|
570 strcat (constructed_spec, "%");
|
|
|
571 if (spec->plus_flag)
|
|
|
572 strcat (constructed_spec, "+");
|
|
|
573 if (spec->space_flag)
|
|
|
574 strcat (constructed_spec, " ");
|
|
|
575 if (spec->number_flag)
|
|
|
576 strcat (constructed_spec, "#");
|
|
|
577 if (spec->precision >= 0)
|
|
|
578 {
|
|
|
579 strcat (constructed_spec, ".");
|
|
|
580 sprintf (constructed_spec + strlen (constructed_spec), "%d",
|
|
|
581 spec->precision);
|
|
|
582 }
|
|
|
583 sprintf (constructed_spec + strlen (constructed_spec), "%c", ch);
|
|
|
584
|
|
|
585 /* sprintf the mofo */
|
|
|
586 /* we have to use separate calls to sprintf(), rather than
|
|
|
587 a single big conditional, because of the different types
|
|
|
588 of the arguments */
|
|
|
589 if (strchr (double_converters, ch))
|
|
|
590 sprintf (text_to_print, constructed_spec, arg.d);
|
|
|
591 else if (strchr (unsigned_int_converters, ch))
|
|
|
592 {
|
|
|
593 if (spec->l_flag)
|
|
|
594 sprintf (text_to_print, constructed_spec, arg.ul);
|
|
|
595 else
|
|
|
596 sprintf (text_to_print, constructed_spec, arg.ui);
|
|
|
597 }
|
|
|
598 else
|
|
|
599 {
|
|
|
600 if (spec->l_flag)
|
|
|
601 sprintf (text_to_print, constructed_spec, arg.l);
|
|
|
602 else
|
|
|
603 sprintf (text_to_print, constructed_spec, arg.i);
|
|
|
604 }
|
|
|
605
|
|
|
606 doprnt_1 (stream, (Bufbyte *) text_to_print,
|
|
|
607 strlen (text_to_print),
|
|
|
608 spec->minwidth, -1, spec->minus_flag, spec->zero_flag);
|
|
|
609 }
|
|
|
610 }
|
|
|
611 }
|
|
|
612
|
|
|
613 /* #### will not get freed if error */
|
|
|
614 if (specs)
|
|
|
615 Dynarr_free (specs);
|
|
|
616 if (args)
|
|
|
617 Dynarr_free (args);
|
|
|
618 return Lstream_byte_count (XLSTREAM (stream)) - init_byte_count;
|
|
|
619 }
|
|
|
620
|
|
|
621 /* You really don't want to know why this is necessary... */
|
|
|
622 static Bytecount
|
|
|
623 emacs_doprnt_2 (Lisp_Object stream, CONST Bufbyte *format_nonreloc,
|
|
|
624 Lisp_Object format_reloc, Bytecount format_length, int nargs,
|
|
|
625 CONST Lisp_Object *largs, ...)
|
|
|
626 {
|
|
|
627 va_list vargs;
|
|
|
628 Bytecount val;
|
|
|
629 va_start (vargs, largs);
|
|
|
630 val = emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
631 format_length, nargs, largs, vargs);
|
|
|
632 va_end (vargs);
|
|
|
633 return val;
|
|
|
634 }
|
|
|
635
|
|
|
636 /*********************** external entry points ***********************/
|
|
|
637
|
|
|
638 #ifdef I18N3
|
|
|
639 /* A note about I18N3 translating: the format string should get
|
|
|
640 translated, but not under all circumstances. When the format
|
|
|
641 string is a Lisp string, what should happen is that Fformat()
|
|
|
642 should format the untranslated args[0] and return that, and also
|
|
|
643 call Fgettext() on args[0] and, if that is different, format it
|
|
|
644 and store it in the `string-translatable' property of
|
|
|
645 the returned string. See Fgettext(). */
|
|
|
646 #endif
|
|
|
647
|
|
|
648 /* Send formatted output to STREAM. The format string comes from
|
|
|
649 either FORMAT_NONRELOC (of length FORMAT_LENGTH; -1 means use
|
|
|
650 strlen() to determine the length) or from FORMAT_RELOC, which
|
|
|
651 should be a Lisp string. Return the number of bytes written
|
|
|
652 to the stream.
|
|
|
653
|
|
|
654 DO NOT pass the data from a Lisp string as the FORMAT_NONRELOC
|
|
|
655 parameter, because this function can cause GC. */
|
|
|
656
|
|
|
657 Bytecount
|
|
|
658 emacs_doprnt_c (Lisp_Object stream, CONST Bufbyte *format_nonreloc,
|
|
|
659 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
660 ...)
|
|
|
661 {
|
|
|
662 int val;
|
|
|
663 va_list vargs;
|
|
|
664
|
|
|
665 va_start (vargs, format_length);
|
|
|
666 val = emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
667 format_length, 0, 0, vargs);
|
|
|
668 va_end (vargs);
|
|
|
669 return val;
|
|
|
670 }
|
|
|
671
|
|
|
672 /* Like emacs_doprnt_c but the args come in va_list format. */
|
|
|
673
|
|
|
674 Bytecount
|
|
|
675 emacs_doprnt_va (Lisp_Object stream, CONST Bufbyte *format_nonreloc,
|
|
|
676 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
677 va_list vargs)
|
|
|
678 {
|
|
|
679 return emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
680 format_length, 0, 0, vargs);
|
|
|
681 }
|
|
|
682
|
|
|
683 /* Like emacs_doprnt_c but the args are Lisp objects instead of
|
|
|
684 C arguments. This causes somewhat different behavior from
|
|
|
685 the above two functions (which should act like printf).
|
|
|
686 See `format' for a description of this behavior. */
|
|
|
687
|
|
|
688 Bytecount
|
|
|
689 emacs_doprnt_lisp (Lisp_Object stream, CONST Bufbyte *format_nonreloc,
|
|
|
690 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
691 int nargs, CONST Lisp_Object *largs)
|
|
|
692 {
|
|
|
693 return emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
694 format_length, nargs, largs);
|
|
|
695 }
|
|
|
696
|
|
|
697 /* Like the previous function but takes a variable number of arguments. */
|
|
|
698
|
|
|
699 Bytecount
|
|
|
700 emacs_doprnt_lisp_2 (Lisp_Object stream, CONST Bufbyte *format_nonreloc,
|
|
|
701 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
702 int nargs, ...)
|
|
|
703 {
|
|
|
704 va_list vargs;
|
|
|
705 int i;
|
|
185
|
706 Lisp_Object *foo = alloca_array (Lisp_Object, nargs);
|
|
0
|
707
|
|
|
708 va_start (vargs, nargs);
|
|
|
709 for (i = 0; i < nargs; i++)
|
|
|
710 foo[i] = va_arg (vargs, Lisp_Object);
|
|
|
711 va_end (vargs);
|
|
185
|
712
|
|
0
|
713 return emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
714 format_length, nargs, foo);
|
|
|
715 }
|
|
|
716
|
|
|
717 /* The following four functions work like the above three but
|
|
|
718 return their output as a Lisp string instead of sending it
|
|
|
719 to a stream. */
|
|
|
720
|
|
|
721 Lisp_Object
|
|
|
722 emacs_doprnt_string_c (CONST Bufbyte *format_nonreloc,
|
|
|
723 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
724 ...)
|
|
|
725 {
|
|
|
726 va_list vargs;
|
|
|
727 Lisp_Object obj;
|
|
|
728 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
729 struct gcpro gcpro1;
|
|
|
730
|
|
|
731 GCPRO1 (stream);
|
|
|
732 va_start (vargs, format_length);
|
|
|
733 emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
734 format_length, 0, 0, vargs);
|
|
|
735 va_end (vargs);
|
|
|
736 Lstream_flush (XLSTREAM (stream));
|
|
|
737 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
738 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
739 UNGCPRO;
|
|
|
740 Lstream_delete (XLSTREAM (stream));
|
|
|
741 return obj;
|
|
|
742 }
|
|
|
743
|
|
|
744 Lisp_Object
|
|
|
745 emacs_doprnt_string_va (CONST Bufbyte *format_nonreloc,
|
|
|
746 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
747 va_list vargs)
|
|
|
748 {
|
|
|
749 /* I'm fairly sure that this function cannot actually GC.
|
|
|
750 That can only happen when the arguments to emacs_doprnt_1() are
|
|
|
751 Lisp objects rather than C args. */
|
|
|
752 Lisp_Object obj;
|
|
|
753 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
754 struct gcpro gcpro1;
|
|
|
755
|
|
|
756 GCPRO1 (stream);
|
|
|
757 emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
758 format_length, 0, 0, vargs);
|
|
|
759 Lstream_flush (XLSTREAM (stream));
|
|
|
760 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
761 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
762 UNGCPRO;
|
|
|
763 Lstream_delete (XLSTREAM (stream));
|
|
|
764 return obj;
|
|
|
765 }
|
|
|
766
|
|
|
767 Lisp_Object
|
|
|
768 emacs_doprnt_string_lisp (CONST Bufbyte *format_nonreloc,
|
|
|
769 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
770 int nargs, CONST Lisp_Object *largs)
|
|
|
771 {
|
|
|
772 Lisp_Object obj;
|
|
|
773 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
774 struct gcpro gcpro1;
|
|
|
775
|
|
|
776 GCPRO1 (stream);
|
|
|
777 emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
778 format_length, nargs, largs);
|
|
|
779 Lstream_flush (XLSTREAM (stream));
|
|
|
780 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
781 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
782 UNGCPRO;
|
|
|
783 Lstream_delete (XLSTREAM (stream));
|
|
|
784 return obj;
|
|
|
785 }
|
|
|
786
|
|
|
787 Lisp_Object
|
|
|
788 emacs_doprnt_string_lisp_2 (CONST Bufbyte *format_nonreloc,
|
|
|
789 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
790 int nargs, ...)
|
|
|
791 {
|
|
|
792 Lisp_Object obj;
|
|
|
793 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
794 struct gcpro gcpro1;
|
|
|
795 va_list vargs;
|
|
|
796 int i;
|
|
185
|
797 Lisp_Object *foo = alloca_array (Lisp_Object, nargs);
|
|
0
|
798
|
|
|
799 va_start (vargs, nargs);
|
|
|
800 for (i = 0; i < nargs; i++)
|
|
|
801 foo[i] = va_arg (vargs, Lisp_Object);
|
|
|
802 va_end (vargs);
|
|
185
|
803
|
|
0
|
804 GCPRO1 (stream);
|
|
|
805 emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
806 format_length, nargs, foo);
|
|
|
807 Lstream_flush (XLSTREAM (stream));
|
|
|
808 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
809 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
810 UNGCPRO;
|
|
|
811 Lstream_delete (XLSTREAM (stream));
|
|
|
812 return obj;
|
|
|
813 }
|
