1 /* Emacs Lisp format strings.
2 Copyright (C) 2001-2004, 2006-2007, 2009, 2015 Free Software
4 Written by Bruno Haible <haible@clisp.cons.org>, 2002.
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "xvasprintf.h"
30 #include "format-invalid.h"
33 #define _(str) gettext (str)
35 /* Emacs Lisp format strings are implemented in emacs-21.1/src/editfns.c,
36 xemacs-21.1.14/src/editfns.c and xemacs-21.1.14/src/doprnt.c.
38 - starts with '%' or '%m$' where m is a positive integer,
39 - is optionally followed by any of the characters '#', '0', '-', ' ', '+',
40 each of which acts as a flag,
41 - is optionally followed by a width specification: '*' (reads an argument)
42 or a nonempty digit sequence,
43 - is optionally followed by '.' and a precision specification: '*' (reads
44 an argument) or a nonempty digit sequence,
45 - is finished by a specifier
46 - '%', that needs no argument,
47 - 'c', that need a character argument,
48 - 'd', 'i', 'x', 'X', 'o', that need an integer argument,
49 - 'e', 'E', 'f', 'g', 'G', that need a floating-point argument,
50 - 's', that need an argument and prints it using princ,
51 - 'S', that need an argument and prints it using prin1.
52 Numbered ('%m$') and unnumbered argument specifications can be used in the
53 same string. The effect of '%m$' is to set the current argument number to
54 m. The current argument number is incremented after processing a directive.
70 enum format_arg_type type;
75 unsigned int directives;
76 unsigned int numbered_arg_count;
77 unsigned int allocated;
78 struct numbered_arg *numbered;
81 /* Locale independent test for a decimal digit.
82 Argument can be 'char' or 'unsigned char'. (Whereas the argument of
83 <ctype.h> isdigit must be an 'unsigned char'.) */
85 #define isdigit(c) ((unsigned int) ((c) - '0') < 10)
89 numbered_arg_compare (const void *p1, const void *p2)
91 unsigned int n1 = ((const struct numbered_arg *) p1)->number;
92 unsigned int n2 = ((const struct numbered_arg *) p2)->number;
94 return (n1 > n2 ? 1 : n1 < n2 ? -1 : 0);
98 format_parse (const char *format, bool translated, char *fdi,
99 char **invalid_reason)
101 const char *const format_start = format;
107 spec.numbered_arg_count = 0;
109 spec.numbered = NULL;
112 for (; *format != '\0';)
113 if (*format++ == '%')
116 enum format_arg_type type;
118 FDI_SET (format - 1, FMTDIR_START);
121 if (isdigit (*format))
123 const char *f = format;
128 m = 10 * m + (*f - '0');
131 while (isdigit (*f));
133 if (*f == '$' && m > 0)
141 while (*format == ' ' || *format == '+' || *format == '-'
142 || *format == '#' || *format == '0')
150 if (spec.allocated == spec.numbered_arg_count)
152 spec.allocated = 2 * spec.allocated + 1;
153 spec.numbered = (struct numbered_arg *) xrealloc (spec.numbered, spec.allocated * sizeof (struct numbered_arg));
155 spec.numbered[spec.numbered_arg_count].number = number;
156 spec.numbered[spec.numbered_arg_count].type = FAT_INTEGER;
157 spec.numbered_arg_count++;
161 else if (isdigit (*format))
163 do format++; while (isdigit (*format));
166 /* Parse precision. */
175 if (spec.allocated == spec.numbered_arg_count)
177 spec.allocated = 2 * spec.allocated + 1;
178 spec.numbered = (struct numbered_arg *) xrealloc (spec.numbered, spec.allocated * sizeof (struct numbered_arg));
180 spec.numbered[spec.numbered_arg_count].number = number;
181 spec.numbered[spec.numbered_arg_count].type = FAT_INTEGER;
182 spec.numbered_arg_count++;
186 else if (isdigit (*format))
188 do format++; while (isdigit (*format));
198 type = FAT_CHARACTER;
200 case 'd': case 'i': case 'x': case 'X': case 'o':
203 case 'e': case 'E': case 'f': case 'g': case 'G':
207 type = FAT_OBJECT_PRETTY;
215 *invalid_reason = INVALID_UNTERMINATED_DIRECTIVE ();
216 FDI_SET (format - 1, FMTDIR_ERROR);
221 INVALID_CONVERSION_SPECIFIER (spec.directives, *format);
222 FDI_SET (format, FMTDIR_ERROR);
227 if (type != FAT_NONE)
229 if (spec.allocated == spec.numbered_arg_count)
231 spec.allocated = 2 * spec.allocated + 1;
232 spec.numbered = (struct numbered_arg *) xrealloc (spec.numbered, spec.allocated * sizeof (struct numbered_arg));
234 spec.numbered[spec.numbered_arg_count].number = number;
235 spec.numbered[spec.numbered_arg_count].type = type;
236 spec.numbered_arg_count++;
241 FDI_SET (format, FMTDIR_END);
246 /* Sort the numbered argument array, and eliminate duplicates. */
247 if (spec.numbered_arg_count > 1)
252 qsort (spec.numbered, spec.numbered_arg_count,
253 sizeof (struct numbered_arg), numbered_arg_compare);
255 /* Remove duplicates: Copy from i to j, keeping 0 <= j <= i. */
257 for (i = j = 0; i < spec.numbered_arg_count; i++)
258 if (j > 0 && spec.numbered[i].number == spec.numbered[j-1].number)
260 enum format_arg_type type1 = spec.numbered[i].type;
261 enum format_arg_type type2 = spec.numbered[j-1].type;
262 enum format_arg_type type_both;
268 /* Incompatible types. */
269 type_both = FAT_NONE;
272 INVALID_INCOMPATIBLE_ARG_TYPES (spec.numbered[i].number);
276 spec.numbered[j-1].type = type_both;
282 spec.numbered[j].number = spec.numbered[i].number;
283 spec.numbered[j].type = spec.numbered[i].type;
287 spec.numbered_arg_count = j;
289 /* *invalid_reason has already been set above. */
293 result = XMALLOC (struct spec);
298 if (spec.numbered != NULL)
299 free (spec.numbered);
304 format_free (void *descr)
306 struct spec *spec = (struct spec *) descr;
308 if (spec->numbered != NULL)
309 free (spec->numbered);
314 format_get_number_of_directives (void *descr)
316 struct spec *spec = (struct spec *) descr;
318 return spec->directives;
322 format_check (void *msgid_descr, void *msgstr_descr, bool equality,
323 formatstring_error_logger_t error_logger,
324 const char *pretty_msgid, const char *pretty_msgstr)
326 struct spec *spec1 = (struct spec *) msgid_descr;
327 struct spec *spec2 = (struct spec *) msgstr_descr;
330 if (spec1->numbered_arg_count + spec2->numbered_arg_count > 0)
333 unsigned int n1 = spec1->numbered_arg_count;
334 unsigned int n2 = spec2->numbered_arg_count;
336 /* Check the argument names are the same.
337 Both arrays are sorted. We search for the first difference. */
338 for (i = 0, j = 0; i < n1 || j < n2; )
340 int cmp = (i >= n1 ? 1 :
342 spec1->numbered[i].number > spec2->numbered[j].number ? 1 :
343 spec1->numbered[i].number < spec2->numbered[j].number ? -1 :
349 error_logger (_("a format specification for argument %u, as in '%s', doesn't exist in '%s'"),
350 spec2->numbered[j].number, pretty_msgstr,
360 error_logger (_("a format specification for argument %u doesn't exist in '%s'"),
361 spec1->numbered[i].number, pretty_msgstr);
371 /* Check the argument types are the same. */
373 for (i = 0, j = 0; j < n2; )
375 if (spec1->numbered[i].number == spec2->numbered[j].number)
377 if (spec1->numbered[i].type != spec2->numbered[j].type)
380 error_logger (_("format specifications in '%s' and '%s' for argument %u are not the same"),
381 pretty_msgid, pretty_msgstr,
382 spec2->numbered[j].number);
397 struct formatstring_parser formatstring_elisp =
401 format_get_number_of_directives,
409 /* Test program: Print the argument list specification returned by
410 format_parse for strings read from standard input. */
415 format_print (void *descr)
417 struct spec *spec = (struct spec *) descr;
429 for (i = 0; i < spec->numbered_arg_count; i++)
431 unsigned int number = spec->numbered[i].number;
437 for (; last < number; last++)
439 switch (spec->numbered[i].type)
450 case FAT_OBJECT_PRETTY:
470 size_t line_size = 0;
472 char *invalid_reason;
475 line_len = getline (&line, &line_size, stdin);
478 if (line_len > 0 && line[line_len - 1] == '\n')
479 line[--line_len] = '\0';
481 invalid_reason = NULL;
482 descr = format_parse (line, false, NULL, &invalid_reason);
484 format_print (descr);
487 printf ("%s\n", invalid_reason);
489 free (invalid_reason);
497 * For Emacs M-x compile
499 * compile-command: "/bin/sh ../libtool --tag=CC --mode=link gcc -o a.out -static -O -g -Wall -I.. -I../gnulib-lib -I../intl -DHAVE_CONFIG_H -DTEST format-elisp.c ../gnulib-lib/libgettextlib.la"