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428
|
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
|
|
|
14 later version.
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15
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|
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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
|
|
|
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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446
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34 static const char * const valid_flags = "-+ #0";
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35 static const char * const valid_converters = "dic" "ouxX" "feEgG" "sS";
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36 static const char * const int_converters = "dic";
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37 static const char * const unsigned_int_converters = "ouxX";
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38 static const char * const double_converters = "feEgG";
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39 static const char * const string_converters = "sS";
|
|
428
|
40
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41 typedef struct printf_spec printf_spec;
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42 struct printf_spec
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43 {
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44 int argnum; /* which argument does this spec want? This is one-based:
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45 The first argument given is numbered 1, the second
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46 is 2, etc. This is to handle %##$x-type specs. */
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47 int minwidth;
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|
48 int precision;
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49 unsigned int minus_flag:1;
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50 unsigned int plus_flag:1;
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51 unsigned int space_flag:1;
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52 unsigned int number_flag:1;
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53 unsigned int zero_flag:1;
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54 unsigned int h_flag:1;
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55 unsigned int l_flag:1;
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56 unsigned int forwarding_precision:1;
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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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65 typedef union printf_arg printf_arg;
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|
66 union printf_arg
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|
67 {
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68 long l;
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69 unsigned long ul;
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70 double d;
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71 Bufbyte *bp;
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72 };
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73
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74 /* We maintain a list of all the % specs in the specification,
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75 along with the offset and length of the block of literal text
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76 before each spec. In addition, we have a "dummy" spec that
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|
77 represents all the literal text at the end of the specification.
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|
78 Its converter is 0. */
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|
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79
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80 typedef struct
|
|
|
81 {
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|
|
82 Dynarr_declare (struct printf_spec);
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|
|
83 } printf_spec_dynarr;
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|
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84
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85 typedef struct
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|
86 {
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|
|
87 Dynarr_declare (union printf_arg);
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|
|
88 } printf_arg_dynarr;
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89
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90 /* Append STRING (of length LEN) to STREAM. MINLEN is the minimum field
|
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|
91 width. If MINUS_FLAG is set, left-justify the string in its field;
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92 otherwise, right-justify. If ZERO_FLAG is set, pad with 0's; otherwise
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93 pad with spaces. If MAXLEN is non-negative, the string is first
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|
94 truncated to that many character.
|
|
|
95
|
|
|
96 Note that MINLEN and MAXLEN are Charcounts but LEN is a Bytecount. */
|
|
|
97
|
|
|
98 static void
|
|
442
|
99 doprnt_1 (Lisp_Object stream, const Bufbyte *string, Bytecount len,
|
|
428
|
100 Charcount minlen, Charcount maxlen, int minus_flag, int zero_flag)
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|
|
101 {
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|
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102 Charcount cclen;
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|
103 Bufbyte pad;
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|
104 Lstream *lstr = XLSTREAM (stream);
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105
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106 cclen = bytecount_to_charcount (string, len);
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107
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108 if (zero_flag)
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|
109 pad = '0';
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110 else
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111 pad = ' ';
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112
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113 /* Padding at beginning to right-justify ... */
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|
114 if (minlen > cclen && !minus_flag)
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|
|
115 {
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|
|
116 int to_add = minlen - cclen;
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|
|
117 while (to_add > 0)
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|
|
118 {
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|
119 Lstream_putc (lstr, pad);
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|
120 to_add--;
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|
121 }
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|
|
122 }
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|
123
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|
124 if (maxlen >= 0)
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|
125 len = charcount_to_bytecount (string, min (maxlen, cclen));
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|
126 Lstream_write (lstr, string, len);
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|
127
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|
|
128 /* Padding at end to left-justify ... */
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|
129 if (minlen > cclen && minus_flag)
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|
130 {
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|
131 int to_add = minlen - cclen;
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|
|
132 while (to_add > 0)
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|
133 {
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|
134 Lstream_putc (lstr, pad);
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|
|
135 to_add--;
|
|
|
136 }
|
|
|
137 }
|
|
|
138 }
|
|
|
139
|
|
442
|
140 static const Bufbyte *
|
|
|
141 parse_off_posnum (const Bufbyte *start, const Bufbyte *end, int *returned_num)
|
|
428
|
142 {
|
|
|
143 Bufbyte arg_convert[100];
|
|
|
144 REGISTER Bufbyte *arg_ptr = arg_convert;
|
|
|
145
|
|
|
146 *returned_num = -1;
|
|
|
147 while (start != end && isdigit (*start))
|
|
|
148 {
|
|
|
149 if ((size_t) (arg_ptr - arg_convert) >= sizeof (arg_convert) - 1)
|
|
|
150 error ("Format converter number too large");
|
|
|
151 *arg_ptr++ = *start++;
|
|
|
152 }
|
|
|
153 *arg_ptr = '\0';
|
|
|
154 if (arg_convert != arg_ptr)
|
|
|
155 *returned_num = atoi ((char *) arg_convert);
|
|
|
156 return start;
|
|
|
157 }
|
|
|
158
|
|
|
159 #define NEXT_ASCII_BYTE(ch) \
|
|
|
160 do { \
|
|
|
161 if (fmt == fmt_end) \
|
|
|
162 error ("Premature end of format string"); \
|
|
|
163 ch = *fmt; \
|
|
|
164 if (ch >= 0200) \
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|
|
165 error ("Non-ASCII character in format converter spec"); \
|
|
|
166 fmt++; \
|
|
|
167 } while (0)
|
|
|
168
|
|
|
169 #define RESOLVE_FLAG_CONFLICTS(spec) \
|
|
|
170 do { \
|
|
|
171 if (spec.space_flag && spec.plus_flag) \
|
|
|
172 spec.space_flag = 0; \
|
|
|
173 if (spec.zero_flag && spec.space_flag) \
|
|
|
174 spec.zero_flag = 0; \
|
|
|
175 } while (0)
|
|
|
176
|
|
|
177 static printf_spec_dynarr *
|
|
442
|
178 parse_doprnt_spec (const Bufbyte *format, Bytecount format_length)
|
|
428
|
179 {
|
|
442
|
180 const Bufbyte *fmt = format;
|
|
|
181 const Bufbyte *fmt_end = format + format_length;
|
|
428
|
182 printf_spec_dynarr *specs = Dynarr_new (printf_spec);
|
|
|
183 int prev_argnum = 0;
|
|
|
184
|
|
|
185 while (1)
|
|
|
186 {
|
|
|
187 struct printf_spec spec;
|
|
442
|
188 const Bufbyte *text_end;
|
|
428
|
189 Bufbyte ch;
|
|
|
190
|
|
|
191 xzero (spec);
|
|
|
192 if (fmt == fmt_end)
|
|
|
193 return specs;
|
|
|
194 text_end = (Bufbyte *) memchr (fmt, '%', fmt_end - fmt);
|
|
|
195 if (!text_end)
|
|
|
196 text_end = fmt_end;
|
|
|
197 spec.text_before = fmt - format;
|
|
|
198 spec.text_before_len = text_end - fmt;
|
|
|
199 fmt = text_end;
|
|
|
200 if (fmt != fmt_end)
|
|
|
201 {
|
|
|
202 fmt++; /* skip over % */
|
|
|
203
|
|
|
204 /* A % is special -- no arg number. According to ANSI specs,
|
|
|
205 field width does not apply to %% conversion. */
|
|
|
206 if (fmt != fmt_end && *fmt == '%')
|
|
|
207 {
|
|
|
208 spec.converter = '%';
|
|
|
209 Dynarr_add (specs, spec);
|
|
|
210 fmt++;
|
|
|
211 continue;
|
|
|
212 }
|
|
|
213
|
|
|
214 /* Is there a field number specifier? */
|
|
|
215 {
|
|
442
|
216 const Bufbyte *ptr;
|
|
428
|
217 int fieldspec;
|
|
|
218
|
|
|
219 ptr = parse_off_posnum (fmt, fmt_end, &fieldspec);
|
|
|
220 if (fieldspec > 0 && ptr != fmt_end && *ptr == '$')
|
|
|
221 {
|
|
|
222 /* There is a format specifier */
|
|
|
223 prev_argnum = fieldspec;
|
|
|
224 fmt = ptr + 1;
|
|
|
225 }
|
|
|
226 else
|
|
|
227 prev_argnum++;
|
|
|
228 spec.argnum = prev_argnum;
|
|
|
229 }
|
|
|
230
|
|
|
231 /* Parse off any flags */
|
|
|
232 NEXT_ASCII_BYTE (ch);
|
|
|
233 while (strchr (valid_flags, ch))
|
|
|
234 {
|
|
|
235 switch (ch)
|
|
|
236 {
|
|
446
|
237 case '-': spec.minus_flag = 1; break;
|
|
|
238 case '+': spec.plus_flag = 1; break;
|
|
|
239 case ' ': spec.space_flag = 1; break;
|
|
428
|
240 case '#': spec.number_flag = 1; break;
|
|
446
|
241 case '0': spec.zero_flag = 1; break;
|
|
428
|
242 default: abort ();
|
|
|
243 }
|
|
|
244 NEXT_ASCII_BYTE (ch);
|
|
|
245 }
|
|
|
246
|
|
|
247 /* Parse off the minimum field width */
|
|
|
248 fmt--; /* back up */
|
|
|
249
|
|
|
250 /*
|
|
|
251 * * means the field width was passed as an argument.
|
|
|
252 * Mark the current spec as one that forwards its
|
|
|
253 * field width and flags to the next spec in the array.
|
|
|
254 * Then create a new spec and continue with the parsing.
|
|
|
255 */
|
|
|
256 if (fmt != fmt_end && *fmt == '*')
|
|
|
257 {
|
|
|
258 spec.converter = '*';
|
|
|
259 RESOLVE_FLAG_CONFLICTS(spec);
|
|
|
260 Dynarr_add (specs, spec);
|
|
|
261 xzero (spec);
|
|
|
262 spec.argnum = ++prev_argnum;
|
|
|
263 fmt++;
|
|
|
264 }
|
|
|
265 else
|
|
|
266 {
|
|
|
267 fmt = parse_off_posnum (fmt, fmt_end, &spec.minwidth);
|
|
|
268 if (spec.minwidth == -1)
|
|
|
269 spec.minwidth = 0;
|
|
|
270 }
|
|
|
271
|
|
|
272 /* Parse off any precision specified */
|
|
|
273 NEXT_ASCII_BYTE (ch);
|
|
|
274 if (ch == '.')
|
|
|
275 {
|
|
|
276 /*
|
|
|
277 * * means the precision was passed as an argument.
|
|
|
278 * Mark the current spec as one that forwards its
|
|
|
279 * fieldwidth, flags and precision to the next spec in
|
|
|
280 * the array. Then create a new spec and continue
|
|
|
281 * with the parse.
|
|
|
282 */
|
|
|
283 if (fmt != fmt_end && *fmt == '*')
|
|
|
284 {
|
|
|
285 spec.converter = '*';
|
|
|
286 spec.forwarding_precision = 1;
|
|
|
287 RESOLVE_FLAG_CONFLICTS(spec);
|
|
|
288 Dynarr_add (specs, spec);
|
|
|
289 xzero (spec);
|
|
|
290 spec.argnum = ++prev_argnum;
|
|
|
291 fmt++;
|
|
|
292 }
|
|
|
293 else
|
|
|
294 {
|
|
|
295 fmt = parse_off_posnum (fmt, fmt_end, &spec.precision);
|
|
|
296 if (spec.precision == -1)
|
|
|
297 spec.precision = 0;
|
|
|
298 }
|
|
|
299 NEXT_ASCII_BYTE (ch);
|
|
|
300 }
|
|
|
301 else
|
|
|
302 /* No precision specified */
|
|
|
303 spec.precision = -1;
|
|
|
304
|
|
|
305 /* Parse off h or l flag */
|
|
|
306 if (ch == 'h' || ch == 'l')
|
|
|
307 {
|
|
|
308 if (ch == 'h')
|
|
|
309 spec.h_flag = 1;
|
|
|
310 else
|
|
|
311 spec.l_flag = 1;
|
|
|
312 NEXT_ASCII_BYTE (ch);
|
|
|
313 }
|
|
|
314
|
|
|
315 if (!strchr (valid_converters, ch))
|
|
|
316 error ("Invalid converter character %c", ch);
|
|
|
317 spec.converter = ch;
|
|
|
318 }
|
|
|
319
|
|
|
320 RESOLVE_FLAG_CONFLICTS(spec);
|
|
|
321 Dynarr_add (specs, spec);
|
|
|
322 }
|
|
|
323
|
|
|
324 RETURN_NOT_REACHED(specs) /* suppress compiler warning */
|
|
|
325 }
|
|
|
326
|
|
|
327 static int
|
|
|
328 get_args_needed (printf_spec_dynarr *specs)
|
|
|
329 {
|
|
|
330 int args_needed = 0;
|
|
|
331 REGISTER int i;
|
|
|
332
|
|
|
333 /* Figure out how many args are needed. This may be less than
|
|
|
334 the number of specs because a spec could be %% or could be
|
|
|
335 missing (literal text at end of format string) or there
|
|
|
336 could be specs where the field number is explicitly given.
|
|
|
337 We just look for the maximum argument number that's referenced. */
|
|
|
338
|
|
|
339 for (i = 0; i < Dynarr_length (specs); i++)
|
|
|
340 {
|
|
|
341 char ch = Dynarr_at (specs, i).converter;
|
|
|
342 if (ch && ch != '%')
|
|
|
343 {
|
|
|
344 int argnum = Dynarr_at (specs, i).argnum;
|
|
|
345 if (argnum > args_needed)
|
|
|
346 args_needed = argnum;
|
|
|
347 }
|
|
|
348 }
|
|
|
349
|
|
|
350 return args_needed;
|
|
|
351 }
|
|
|
352
|
|
|
353 static printf_arg_dynarr *
|
|
|
354 get_doprnt_args (printf_spec_dynarr *specs, va_list vargs)
|
|
|
355 {
|
|
|
356 printf_arg_dynarr *args = Dynarr_new (printf_arg);
|
|
|
357 union printf_arg arg;
|
|
|
358 REGISTER int i;
|
|
|
359 int args_needed = get_args_needed (specs);
|
|
|
360
|
|
|
361 xzero (arg);
|
|
|
362 for (i = 1; i <= args_needed; i++)
|
|
|
363 {
|
|
|
364 int j;
|
|
|
365 char ch;
|
|
|
366 struct printf_spec *spec = 0;
|
|
|
367
|
|
|
368 for (j = 0; j < Dynarr_length (specs); j++)
|
|
|
369 {
|
|
|
370 spec = Dynarr_atp (specs, j);
|
|
|
371 if (spec->argnum == i)
|
|
|
372 break;
|
|
|
373 }
|
|
|
374
|
|
|
375 if (j == Dynarr_length (specs))
|
|
|
376 error ("No conversion spec for argument %d", i);
|
|
|
377
|
|
|
378 ch = spec->converter;
|
|
|
379
|
|
|
380 if (strchr (int_converters, ch))
|
|
|
381 {
|
|
446
|
382 if (spec->l_flag)
|
|
428
|
383 arg.l = va_arg (vargs, long);
|
|
|
384 else
|
|
446
|
385 /* int even if ch == 'c' or spec->h_flag:
|
|
|
386 "the type used in va_arg is supposed to match the
|
|
|
387 actual type **after default promotions**."
|
|
|
388 Hence we read an int, not a short, if spec->h_flag. */
|
|
|
389 arg.l = va_arg (vargs, int);
|
|
428
|
390 }
|
|
|
391 else if (strchr (unsigned_int_converters, ch))
|
|
|
392 {
|
|
446
|
393 if (spec->l_flag)
|
|
428
|
394 arg.ul = va_arg (vargs, unsigned long);
|
|
|
395 else
|
|
446
|
396 /* unsigned int even if ch == 'c' or spec->h_flag */
|
|
|
397 arg.ul = (unsigned long) va_arg (vargs, unsigned int);
|
|
428
|
398 }
|
|
|
399 else if (strchr (double_converters, ch))
|
|
|
400 arg.d = va_arg (vargs, double);
|
|
|
401 else if (strchr (string_converters, ch))
|
|
|
402 arg.bp = va_arg (vargs, Bufbyte *);
|
|
|
403 else abort ();
|
|
|
404
|
|
|
405 Dynarr_add (args, arg);
|
|
|
406 }
|
|
|
407
|
|
|
408 return args;
|
|
|
409 }
|
|
|
410
|
|
|
411 /* Generate output from a format-spec FORMAT, of length FORMAT_LENGTH.
|
|
|
412 Output goes in BUFFER, which has room for BUFSIZE bytes.
|
|
|
413 If the output does not fit, truncate it to fit.
|
|
|
414 Returns the number of bytes stored into BUFFER.
|
|
|
415 LARGS or VARGS points to the arguments, and NARGS says how many.
|
|
|
416 if LARGS is non-zero, it should be a pointer to NARGS worth of
|
|
|
417 Lisp arguments. Otherwise, VARGS should be a va_list referring
|
|
|
418 to the arguments. */
|
|
|
419
|
|
|
420 static Bytecount
|
|
442
|
421 emacs_doprnt_1 (Lisp_Object stream, const Bufbyte *format_nonreloc,
|
|
428
|
422 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
423 int nargs,
|
|
|
424 /* #### Gag me, gag me, gag me */
|
|
442
|
425 const Lisp_Object *largs, va_list vargs)
|
|
428
|
426 {
|
|
|
427 printf_spec_dynarr *specs = 0;
|
|
|
428 printf_arg_dynarr *args = 0;
|
|
|
429 REGISTER int i;
|
|
|
430 int init_byte_count = Lstream_byte_count (XLSTREAM (stream));
|
|
|
431
|
|
|
432 if (!NILP (format_reloc))
|
|
|
433 {
|
|
|
434 format_nonreloc = XSTRING_DATA (format_reloc);
|
|
|
435 format_length = XSTRING_LENGTH (format_reloc);
|
|
|
436 }
|
|
|
437 if (format_length < 0)
|
|
442
|
438 format_length = (Bytecount) strlen ((const char *) format_nonreloc);
|
|
428
|
439
|
|
|
440 specs = parse_doprnt_spec (format_nonreloc, format_length);
|
|
|
441 if (largs)
|
|
|
442 {
|
|
446
|
443 /* allow too many args for string, but not too few */
|
|
428
|
444 if (nargs < get_args_needed (specs))
|
|
|
445 signal_error (Qwrong_number_of_arguments,
|
|
|
446 list3 (Qformat,
|
|
|
447 make_int (nargs),
|
|
|
448 !NILP (format_reloc) ? format_reloc :
|
|
|
449 make_string (format_nonreloc, format_length)));
|
|
|
450 }
|
|
|
451 else
|
|
|
452 {
|
|
|
453 args = get_doprnt_args (specs, vargs);
|
|
|
454 }
|
|
|
455
|
|
|
456 for (i = 0; i < Dynarr_length (specs); i++)
|
|
|
457 {
|
|
|
458 struct printf_spec *spec = Dynarr_atp (specs, i);
|
|
|
459 char ch;
|
|
|
460
|
|
|
461 /* Copy the text before */
|
|
|
462 if (!NILP (format_reloc)) /* refetch in case of GC below */
|
|
|
463 format_nonreloc = XSTRING_DATA (format_reloc);
|
|
446
|
464
|
|
|
465 doprnt_1 (stream, format_nonreloc + spec->text_before,
|
|
|
466 spec->text_before_len, 0, -1, 0, 0);
|
|
428
|
467
|
|
|
468 ch = spec->converter;
|
|
|
469
|
|
|
470 if (!ch)
|
|
|
471 continue;
|
|
|
472
|
|
|
473 if (ch == '%')
|
|
|
474 {
|
|
|
475 doprnt_1 (stream, (Bufbyte *) &ch, 1, 0, -1, 0, 0);
|
|
|
476 continue;
|
|
|
477 }
|
|
|
478
|
|
|
479 /* The char '*' as converter means the field width, precision
|
|
|
480 was specified as an argument. Extract the data and forward
|
|
|
481 it to the next spec, to which it will apply. */
|
|
|
482 if (ch == '*')
|
|
|
483 {
|
|
|
484 struct printf_spec *nextspec = Dynarr_atp (specs, i + 1);
|
|
|
485 Lisp_Object obj = largs[spec->argnum - 1];
|
|
|
486
|
|
|
487 if (INTP (obj))
|
|
|
488 {
|
|
|
489 if (spec->forwarding_precision)
|
|
|
490 {
|
|
|
491 nextspec->precision = XINT (obj);
|
|
|
492 nextspec->minwidth = spec->minwidth;
|
|
|
493 }
|
|
|
494 else
|
|
|
495 {
|
|
|
496 nextspec->minwidth = XINT (obj);
|
|
446
|
497 if (XINT (obj) < 0)
|
|
428
|
498 {
|
|
|
499 spec->minus_flag = 1;
|
|
|
500 nextspec->minwidth = - nextspec->minwidth;
|
|
|
501 }
|
|
|
502 }
|
|
446
|
503 nextspec->minus_flag = spec->minus_flag;
|
|
|
504 nextspec->plus_flag = spec->plus_flag;
|
|
|
505 nextspec->space_flag = spec->space_flag;
|
|
428
|
506 nextspec->number_flag = spec->number_flag;
|
|
446
|
507 nextspec->zero_flag = spec->zero_flag;
|
|
428
|
508 }
|
|
|
509 continue;
|
|
|
510 }
|
|
|
511
|
|
|
512 if (largs && (spec->argnum < 1 || spec->argnum > nargs))
|
|
|
513 error ("Invalid repositioning argument %d", spec->argnum);
|
|
|
514
|
|
|
515 else if (ch == 'S' || ch == 's')
|
|
|
516 {
|
|
|
517 Bufbyte *string;
|
|
|
518 Bytecount string_len;
|
|
|
519
|
|
|
520 if (!largs)
|
|
|
521 {
|
|
|
522 string = Dynarr_at (args, spec->argnum - 1).bp;
|
|
|
523 /* error() can be called with null string arguments.
|
|
|
524 E.g., in fileio.c, the return value of strerror()
|
|
|
525 is never checked. We'll print (null), like some
|
|
|
526 printf implementations do. Would it be better (and safe)
|
|
|
527 to signal an error instead? Or should we just use the
|
|
|
528 empty string? -dkindred@cs.cmu.edu 8/1997
|
|
|
529 */
|
|
|
530 if (!string)
|
|
|
531 string = (Bufbyte *) "(null)";
|
|
|
532 string_len = strlen ((char *) string);
|
|
|
533 }
|
|
|
534 else
|
|
|
535 {
|
|
|
536 Lisp_Object obj = largs[spec->argnum - 1];
|
|
440
|
537 Lisp_String *ls;
|
|
428
|
538
|
|
|
539 if (ch == 'S')
|
|
|
540 {
|
|
|
541 /* For `S', prin1 the argument and then treat like
|
|
|
542 a string. */
|
|
|
543 ls = XSTRING (Fprin1_to_string (obj, Qnil));
|
|
|
544 }
|
|
|
545 else if (STRINGP (obj))
|
|
|
546 ls = XSTRING (obj);
|
|
|
547 else if (SYMBOLP (obj))
|
|
|
548 ls = XSYMBOL (obj)->name;
|
|
|
549 else
|
|
|
550 {
|
|
|
551 /* convert to string using princ. */
|
|
|
552 ls = XSTRING (Fprin1_to_string (obj, Qt));
|
|
|
553 }
|
|
|
554 string = string_data (ls);
|
|
|
555 string_len = string_length (ls);
|
|
|
556 }
|
|
|
557
|
|
|
558 doprnt_1 (stream, string, string_len, spec->minwidth,
|
|
|
559 spec->precision, spec->minus_flag, spec->zero_flag);
|
|
|
560 }
|
|
|
561
|
|
|
562 else
|
|
|
563 {
|
|
|
564 /* Must be a number. */
|
|
|
565 union printf_arg arg;
|
|
|
566
|
|
|
567 if (!largs)
|
|
|
568 {
|
|
|
569 arg = Dynarr_at (args, spec->argnum - 1);
|
|
|
570 }
|
|
|
571 else
|
|
|
572 {
|
|
|
573 Lisp_Object obj = largs[spec->argnum - 1];
|
|
|
574 if (CHARP (obj))
|
|
|
575 obj = make_int (XCHAR (obj));
|
|
|
576 if (!INT_OR_FLOATP (obj))
|
|
|
577 {
|
|
|
578 error ("format specifier %%%c doesn't match argument type",
|
|
|
579 ch);
|
|
|
580 }
|
|
|
581 else if (strchr (double_converters, ch))
|
|
|
582 arg.d = XFLOATINT (obj);
|
|
|
583 else
|
|
|
584 {
|
|
446
|
585 if (FLOATP (obj))
|
|
|
586 obj = Ftruncate (obj);
|
|
428
|
587
|
|
|
588 if (strchr (unsigned_int_converters, ch))
|
|
446
|
589 arg.ul = (unsigned long) XINT (obj);
|
|
428
|
590 else
|
|
446
|
591 arg.l = XINT (obj);
|
|
428
|
592 }
|
|
|
593 }
|
|
|
594
|
|
|
595
|
|
|
596 if (ch == 'c')
|
|
|
597 {
|
|
|
598 Emchar a;
|
|
|
599 Bytecount charlen;
|
|
|
600 Bufbyte charbuf[MAX_EMCHAR_LEN];
|
|
|
601
|
|
446
|
602 a = (Emchar) arg.l;
|
|
428
|
603
|
|
|
604 if (!valid_char_p (a))
|
|
|
605 error ("invalid character value %d to %%c spec", a);
|
|
|
606
|
|
|
607 charlen = set_charptr_emchar (charbuf, a);
|
|
|
608 doprnt_1 (stream, charbuf, charlen, spec->minwidth,
|
|
|
609 -1, spec->minus_flag, spec->zero_flag);
|
|
|
610 }
|
|
|
611 else
|
|
|
612 {
|
|
|
613 char text_to_print[500];
|
|
|
614 char constructed_spec[100];
|
|
446
|
615 char *p = constructed_spec;
|
|
428
|
616
|
|
|
617 /* Partially reconstruct the spec and use sprintf() to
|
|
|
618 format the string. */
|
|
|
619
|
|
|
620 /* Make sure nothing stupid happens */
|
|
|
621 /* DO NOT REMOVE THE (int) CAST! Incorrect results will
|
|
|
622 follow! */
|
|
|
623 spec->precision = min (spec->precision,
|
|
|
624 (int) (sizeof (text_to_print) - 50));
|
|
|
625
|
|
446
|
626 *p++ = '%';
|
|
|
627 if (spec->plus_flag) *p++ = '+';
|
|
|
628 if (spec->space_flag) *p++ = ' ';
|
|
|
629 if (spec->number_flag) *p++ = '#';
|
|
|
630
|
|
444
|
631 if (spec->precision >= 0 && !spec->minwidth)
|
|
428
|
632 {
|
|
446
|
633 *p++ = '.';
|
|
|
634 p = long_to_string (p, spec->precision);
|
|
428
|
635 }
|
|
|
636
|
|
|
637 /* sprintf the mofo */
|
|
|
638 /* we have to use separate calls to sprintf(), rather than
|
|
|
639 a single big conditional, because of the different types
|
|
|
640 of the arguments */
|
|
|
641 if (strchr (double_converters, ch))
|
|
442
|
642 {
|
|
446
|
643 *p++ = ch;
|
|
|
644 *p++ = '\0';
|
|
442
|
645 sprintf (text_to_print, constructed_spec, arg.d);
|
|
|
646 }
|
|
428
|
647 else
|
|
|
648 {
|
|
442
|
649 if (spec->zero_flag && spec->minwidth)
|
|
446
|
650 sprintf (p, "0%dl%c", spec->minwidth, ch);
|
|
442
|
651 else
|
|
446
|
652 sprintf (p, "l%c", ch);
|
|
|
653
|
|
|
654 if (strchr (unsigned_int_converters, ch))
|
|
|
655 sprintf (text_to_print, constructed_spec, arg.ul);
|
|
|
656 else
|
|
428
|
657 sprintf (text_to_print, constructed_spec, arg.l);
|
|
|
658 }
|
|
|
659
|
|
|
660 doprnt_1 (stream, (Bufbyte *) text_to_print,
|
|
|
661 strlen (text_to_print),
|
|
|
662 spec->minwidth, -1, spec->minus_flag, spec->zero_flag);
|
|
|
663 }
|
|
|
664 }
|
|
|
665 }
|
|
|
666
|
|
|
667 /* #### will not get freed if error */
|
|
|
668 if (specs)
|
|
|
669 Dynarr_free (specs);
|
|
|
670 if (args)
|
|
|
671 Dynarr_free (args);
|
|
|
672 return Lstream_byte_count (XLSTREAM (stream)) - init_byte_count;
|
|
|
673 }
|
|
|
674
|
|
|
675 /* You really don't want to know why this is necessary... */
|
|
|
676 static Bytecount
|
|
442
|
677 emacs_doprnt_2 (Lisp_Object stream, const Bufbyte *format_nonreloc,
|
|
428
|
678 Lisp_Object format_reloc, Bytecount format_length, int nargs,
|
|
442
|
679 const Lisp_Object *largs, ...)
|
|
428
|
680 {
|
|
|
681 va_list vargs;
|
|
|
682 Bytecount val;
|
|
|
683 va_start (vargs, largs);
|
|
|
684 val = emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
685 format_length, nargs, largs, vargs);
|
|
|
686 va_end (vargs);
|
|
|
687 return val;
|
|
|
688 }
|
|
|
689
|
|
|
690 /*********************** external entry points ***********************/
|
|
|
691
|
|
|
692 #ifdef I18N3
|
|
|
693 /* A note about I18N3 translating: the format string should get
|
|
|
694 translated, but not under all circumstances. When the format
|
|
|
695 string is a Lisp string, what should happen is that Fformat()
|
|
|
696 should format the untranslated args[0] and return that, and also
|
|
|
697 call Fgettext() on args[0] and, if that is different, format it
|
|
|
698 and store it in the `string-translatable' property of
|
|
|
699 the returned string. See Fgettext(). */
|
|
|
700 #endif
|
|
|
701
|
|
|
702 /* Send formatted output to STREAM. The format string comes from
|
|
|
703 either FORMAT_NONRELOC (of length FORMAT_LENGTH; -1 means use
|
|
|
704 strlen() to determine the length) or from FORMAT_RELOC, which
|
|
|
705 should be a Lisp string. Return the number of bytes written
|
|
|
706 to the stream.
|
|
|
707
|
|
|
708 DO NOT pass the data from a Lisp string as the FORMAT_NONRELOC
|
|
|
709 parameter, because this function can cause GC. */
|
|
|
710
|
|
|
711 Bytecount
|
|
442
|
712 emacs_doprnt_c (Lisp_Object stream, const Bufbyte *format_nonreloc,
|
|
428
|
713 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
714 ...)
|
|
|
715 {
|
|
|
716 int val;
|
|
|
717 va_list vargs;
|
|
|
718
|
|
|
719 va_start (vargs, format_length);
|
|
|
720 val = emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
721 format_length, 0, 0, vargs);
|
|
|
722 va_end (vargs);
|
|
|
723 return val;
|
|
|
724 }
|
|
|
725
|
|
|
726 /* Like emacs_doprnt_c but the args come in va_list format. */
|
|
|
727
|
|
|
728 Bytecount
|
|
442
|
729 emacs_doprnt_va (Lisp_Object stream, const Bufbyte *format_nonreloc,
|
|
428
|
730 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
731 va_list vargs)
|
|
|
732 {
|
|
|
733 return emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
734 format_length, 0, 0, vargs);
|
|
|
735 }
|
|
|
736
|
|
|
737 /* Like emacs_doprnt_c but the args are Lisp objects instead of
|
|
|
738 C arguments. This causes somewhat different behavior from
|
|
|
739 the above two functions (which should act like printf).
|
|
|
740 See `format' for a description of this behavior. */
|
|
|
741
|
|
|
742 Bytecount
|
|
442
|
743 emacs_doprnt_lisp (Lisp_Object stream, const Bufbyte *format_nonreloc,
|
|
428
|
744 Lisp_Object format_reloc, Bytecount format_length,
|
|
442
|
745 int nargs, const Lisp_Object *largs)
|
|
428
|
746 {
|
|
|
747 return emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
748 format_length, nargs, largs);
|
|
|
749 }
|
|
|
750
|
|
|
751 /* Like the previous function but takes a variable number of arguments. */
|
|
|
752
|
|
|
753 Bytecount
|
|
442
|
754 emacs_doprnt_lisp_2 (Lisp_Object stream, const Bufbyte *format_nonreloc,
|
|
428
|
755 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
756 int nargs, ...)
|
|
|
757 {
|
|
|
758 va_list vargs;
|
|
|
759 int i;
|
|
|
760 Lisp_Object *foo = alloca_array (Lisp_Object, nargs);
|
|
|
761
|
|
|
762 va_start (vargs, nargs);
|
|
|
763 for (i = 0; i < nargs; i++)
|
|
|
764 foo[i] = va_arg (vargs, Lisp_Object);
|
|
|
765 va_end (vargs);
|
|
|
766
|
|
|
767 return emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
768 format_length, nargs, foo);
|
|
|
769 }
|
|
|
770
|
|
|
771 /* The following four functions work like the above three but
|
|
|
772 return their output as a Lisp string instead of sending it
|
|
|
773 to a stream. */
|
|
|
774
|
|
|
775 Lisp_Object
|
|
442
|
776 emacs_doprnt_string_c (const Bufbyte *format_nonreloc,
|
|
428
|
777 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
778 ...)
|
|
|
779 {
|
|
|
780 va_list vargs;
|
|
|
781 Lisp_Object obj;
|
|
|
782 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
783 struct gcpro gcpro1;
|
|
|
784
|
|
|
785 GCPRO1 (stream);
|
|
|
786 va_start (vargs, format_length);
|
|
|
787 emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
788 format_length, 0, 0, vargs);
|
|
|
789 va_end (vargs);
|
|
|
790 Lstream_flush (XLSTREAM (stream));
|
|
|
791 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
792 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
793 UNGCPRO;
|
|
|
794 Lstream_delete (XLSTREAM (stream));
|
|
|
795 return obj;
|
|
|
796 }
|
|
|
797
|
|
|
798 Lisp_Object
|
|
442
|
799 emacs_doprnt_string_va (const Bufbyte *format_nonreloc,
|
|
428
|
800 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
801 va_list vargs)
|
|
|
802 {
|
|
|
803 /* I'm fairly sure that this function cannot actually GC.
|
|
|
804 That can only happen when the arguments to emacs_doprnt_1() are
|
|
|
805 Lisp objects rather than C args. */
|
|
|
806 Lisp_Object obj;
|
|
|
807 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
808 struct gcpro gcpro1;
|
|
|
809
|
|
|
810 GCPRO1 (stream);
|
|
|
811 emacs_doprnt_1 (stream, format_nonreloc, format_reloc,
|
|
|
812 format_length, 0, 0, vargs);
|
|
|
813 Lstream_flush (XLSTREAM (stream));
|
|
|
814 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
815 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
816 UNGCPRO;
|
|
|
817 Lstream_delete (XLSTREAM (stream));
|
|
|
818 return obj;
|
|
|
819 }
|
|
|
820
|
|
|
821 Lisp_Object
|
|
442
|
822 emacs_doprnt_string_lisp (const Bufbyte *format_nonreloc,
|
|
428
|
823 Lisp_Object format_reloc, Bytecount format_length,
|
|
442
|
824 int nargs, const Lisp_Object *largs)
|
|
428
|
825 {
|
|
|
826 Lisp_Object obj;
|
|
|
827 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
828 struct gcpro gcpro1;
|
|
|
829
|
|
|
830 GCPRO1 (stream);
|
|
|
831 emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
832 format_length, nargs, largs);
|
|
|
833 Lstream_flush (XLSTREAM (stream));
|
|
|
834 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
835 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
836 UNGCPRO;
|
|
|
837 Lstream_delete (XLSTREAM (stream));
|
|
|
838 return obj;
|
|
|
839 }
|
|
|
840
|
|
|
841 Lisp_Object
|
|
442
|
842 emacs_doprnt_string_lisp_2 (const Bufbyte *format_nonreloc,
|
|
428
|
843 Lisp_Object format_reloc, Bytecount format_length,
|
|
|
844 int nargs, ...)
|
|
|
845 {
|
|
|
846 Lisp_Object obj;
|
|
|
847 Lisp_Object stream = make_resizing_buffer_output_stream ();
|
|
|
848 struct gcpro gcpro1;
|
|
|
849 va_list vargs;
|
|
|
850 int i;
|
|
|
851 Lisp_Object *foo = alloca_array (Lisp_Object, nargs);
|
|
|
852
|
|
|
853 va_start (vargs, nargs);
|
|
|
854 for (i = 0; i < nargs; i++)
|
|
|
855 foo[i] = va_arg (vargs, Lisp_Object);
|
|
|
856 va_end (vargs);
|
|
|
857
|
|
|
858 GCPRO1 (stream);
|
|
|
859 emacs_doprnt_2 (stream, format_nonreloc, format_reloc,
|
|
|
860 format_length, nargs, foo);
|
|
|
861 Lstream_flush (XLSTREAM (stream));
|
|
|
862 obj = make_string (resizing_buffer_stream_ptr (XLSTREAM (stream)),
|
|
|
863 Lstream_byte_count (XLSTREAM (stream)));
|
|
|
864 UNGCPRO;
|
|
|
865 Lstream_delete (XLSTREAM (stream));
|
|
|
866 return obj;
|
|
|
867 }
|
