1 /* librep format strings.
2 Copyright (C) 2001-2004, 2006-2007, 2009, 2015 Free Software
4 Written by Bruno Haible <haible@clisp.cons.org>, 2001.
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 /* librep format strings are implemented in librep-0.14/src/streams.c.
37 - starts with '%' or '%m$' where m is a positive integer,
38 - is optionally followed by any of the characters '-', '^', '0', '+', ' ',
39 each of which acts as a flag,
40 - is optionally followed by a width specification: a nonempty digit
42 - is optionally followed by '.' and a precision specification: a nonempty
44 - is finished by a specifier
45 - '%', that needs no argument,
46 - 'c', that need a character argument,
47 - 'd', 'x', 'X', 'o', that need an integer argument,
48 - 's', that need an argument and prints it using princ,
49 - 'S', that need an argument and prints it using prin1.
50 Numbered ('%m$') and unnumbered argument specifications can be used in the
51 same string. The effect of '%m$' is to set the current argument number to
52 m. The current argument number is incremented after processing a directive.
67 enum format_arg_type type;
72 unsigned int directives;
73 unsigned int numbered_arg_count;
74 unsigned int allocated;
75 struct numbered_arg *numbered;
78 /* Locale independent test for a decimal digit.
79 Argument can be 'char' or 'unsigned char'. (Whereas the argument of
80 <ctype.h> isdigit must be an 'unsigned char'.) */
82 #define isdigit(c) ((unsigned int) ((c) - '0') < 10)
86 numbered_arg_compare (const void *p1, const void *p2)
88 unsigned int n1 = ((const struct numbered_arg *) p1)->number;
89 unsigned int n2 = ((const struct numbered_arg *) p2)->number;
91 return (n1 > n2 ? 1 : n1 < n2 ? -1 : 0);
95 format_parse (const char *format, bool translated, char *fdi,
96 char **invalid_reason)
98 const char *const format_start = format;
104 spec.numbered_arg_count = 0;
106 spec.numbered = NULL;
109 for (; *format != '\0';)
110 if (*format++ == '%')
113 enum format_arg_type type;
115 FDI_SET (format - 1, FMTDIR_START);
118 if (isdigit (*format))
120 const char *f = format;
125 m = 10 * m + (*f - '0');
128 while (isdigit (*f));
130 if (*f == '$' && m > 0)
138 while (*format == '-' || *format == '^' || *format == '0'
139 || *format == '+' || *format == ' ')
143 if (isdigit (*format))
145 do format++; while (isdigit (*format));
148 /* Parse precision. */
153 if (isdigit (*format))
155 do format++; while (isdigit (*format));
165 type = FAT_CHARACTER;
167 case 'd': case 'x': case 'X': case 'o':
171 type = FAT_OBJECT_PRETTY;
179 *invalid_reason = INVALID_UNTERMINATED_DIRECTIVE ();
180 FDI_SET (format - 1, FMTDIR_ERROR);
185 INVALID_CONVERSION_SPECIFIER (spec.directives, *format);
186 FDI_SET (format, FMTDIR_ERROR);
191 if (type != FAT_NONE)
193 if (spec.allocated == spec.numbered_arg_count)
195 spec.allocated = 2 * spec.allocated + 1;
196 spec.numbered = (struct numbered_arg *) xrealloc (spec.numbered, spec.allocated * sizeof (struct numbered_arg));
198 spec.numbered[spec.numbered_arg_count].number = number;
199 spec.numbered[spec.numbered_arg_count].type = type;
200 spec.numbered_arg_count++;
205 FDI_SET (format, FMTDIR_END);
210 /* Sort the numbered argument array, and eliminate duplicates. */
211 if (spec.numbered_arg_count > 1)
216 qsort (spec.numbered, spec.numbered_arg_count,
217 sizeof (struct numbered_arg), numbered_arg_compare);
219 /* Remove duplicates: Copy from i to j, keeping 0 <= j <= i. */
221 for (i = j = 0; i < spec.numbered_arg_count; i++)
222 if (j > 0 && spec.numbered[i].number == spec.numbered[j-1].number)
224 enum format_arg_type type1 = spec.numbered[i].type;
225 enum format_arg_type type2 = spec.numbered[j-1].type;
226 enum format_arg_type type_both;
232 /* Incompatible types. */
233 type_both = FAT_NONE;
236 INVALID_INCOMPATIBLE_ARG_TYPES (spec.numbered[i].number);
240 spec.numbered[j-1].type = type_both;
246 spec.numbered[j].number = spec.numbered[i].number;
247 spec.numbered[j].type = spec.numbered[i].type;
251 spec.numbered_arg_count = j;
253 /* *invalid_reason has already been set above. */
257 result = XMALLOC (struct spec);
262 if (spec.numbered != NULL)
263 free (spec.numbered);
268 format_free (void *descr)
270 struct spec *spec = (struct spec *) descr;
272 if (spec->numbered != NULL)
273 free (spec->numbered);
278 format_get_number_of_directives (void *descr)
280 struct spec *spec = (struct spec *) descr;
282 return spec->directives;
286 format_check (void *msgid_descr, void *msgstr_descr, bool equality,
287 formatstring_error_logger_t error_logger,
288 const char *pretty_msgid, const char *pretty_msgstr)
290 struct spec *spec1 = (struct spec *) msgid_descr;
291 struct spec *spec2 = (struct spec *) msgstr_descr;
294 if (spec1->numbered_arg_count + spec2->numbered_arg_count > 0)
297 unsigned int n1 = spec1->numbered_arg_count;
298 unsigned int n2 = spec2->numbered_arg_count;
300 /* Check the argument names are the same.
301 Both arrays are sorted. We search for the first difference. */
302 for (i = 0, j = 0; i < n1 || j < n2; )
304 int cmp = (i >= n1 ? 1 :
306 spec1->numbered[i].number > spec2->numbered[j].number ? 1 :
307 spec1->numbered[i].number < spec2->numbered[j].number ? -1 :
313 error_logger (_("a format specification for argument %u, as in '%s', doesn't exist in '%s'"),
314 spec2->numbered[j].number, pretty_msgstr,
324 error_logger (_("a format specification for argument %u doesn't exist in '%s'"),
325 spec1->numbered[i].number, pretty_msgstr);
335 /* Check the argument types are the same. */
337 for (i = 0, j = 0; j < n2; )
339 if (spec1->numbered[i].number == spec2->numbered[j].number)
341 if (spec1->numbered[i].type != spec2->numbered[j].type)
344 error_logger (_("format specifications in '%s' and '%s' for argument %u are not the same"),
345 pretty_msgid, pretty_msgstr,
346 spec2->numbered[j].number);
361 struct formatstring_parser formatstring_librep =
365 format_get_number_of_directives,
373 /* Test program: Print the argument list specification returned by
374 format_parse for strings read from standard input. */
379 format_print (void *descr)
381 struct spec *spec = (struct spec *) descr;
393 for (i = 0; i < spec->numbered_arg_count; i++)
395 unsigned int number = spec->numbered[i].number;
401 for (; last < number; last++)
403 switch (spec->numbered[i].type)
411 case FAT_OBJECT_PRETTY:
431 size_t line_size = 0;
433 char *invalid_reason;
436 line_len = getline (&line, &line_size, stdin);
439 if (line_len > 0 && line[line_len - 1] == '\n')
440 line[--line_len] = '\0';
442 invalid_reason = NULL;
443 descr = format_parse (line, false, NULL, &invalid_reason);
445 format_print (descr);
448 printf ("%s\n", invalid_reason);
450 free (invalid_reason);
458 * For Emacs M-x compile
460 * 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-librep.c ../gnulib-lib/libgettextlib.la"