NeoMutt  2022-04-29-215-gc12b98
Teaching an old dog new tricks
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mailcap.c File Reference

RFC1524 Mailcap routines. More...

#include "config.h"
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include "mutt/lib.h"
#include "config/lib.h"
#include "email/lib.h"
#include "core/lib.h"
#include "mailcap.h"
#include "attach/lib.h"
#include "muttlib.h"
#include "protos.h"
+ Include dependency graph for mailcap.c:

Go to the source code of this file.

Functions

int mailcap_expand_command (struct Body *a, const char *filename, const char *type, struct Buffer *command)
 Expand expandos in a command. More...
 
static char * get_field (char *s)
 NUL terminate a RFC1524 field. More...
 
static int get_field_text (char *field, char **entry, const char *type, const char *filename, int line)
 Get the matching text from a mailcap. More...
 
static bool rfc1524_mailcap_parse (struct Body *a, const char *filename, const char *type, struct MailcapEntry *entry, enum MailcapLookup opt)
 Parse a mailcap entry. More...
 
struct MailcapEntrymailcap_entry_new (void)
 Allocate memory for a new rfc1524 entry. More...
 
void mailcap_entry_free (struct MailcapEntry **ptr)
 Deallocate an struct MailcapEntry. More...
 
bool mailcap_lookup (struct Body *a, char *type, size_t typelen, struct MailcapEntry *entry, enum MailcapLookup opt)
 Find given type in the list of mailcap files. More...
 
void mailcap_expand_filename (const char *nametemplate, const char *oldfile, struct Buffer *newfile)
 Expand a new filename from a template or existing filename. More...
 

Detailed Description

RFC1524 Mailcap routines.

Authors
  • Michael R. Elkins

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file mailcap.c.

Function Documentation

◆ mailcap_expand_command()

int mailcap_expand_command ( struct Body a,
const char *  filename,
const char *  type,
struct Buffer command 
)

Expand expandos in a command.

Parameters
aEmail Body
filenameFile containing the email text
typeType, e.g. "text/plain"
commandBuffer containing command
Return values
0Command works on a file
1Command works on a pipe

The command semantics include the following: s is the filename that contains the mail body data t is the content type, like text/plain %{parameter} is replaced by the parameter value from the content-type field % is % Unsupported rfc1524 parameters: these would probably require some doing by neomutt, and can probably just be done by piping the message to metamail n is the integer number of sub-parts in the multipart F is "content-type filename" repeated for each sub-part

Definition at line 67 of file mailcap.c.

69{
70 int needspipe = true;
71 struct Buffer *buf = mutt_buffer_pool_get();
72 struct Buffer *quoted = mutt_buffer_pool_get();
73 struct Buffer *param = NULL;
74 struct Buffer *type2 = NULL;
75
76 const bool c_mailcap_sanitize = cs_subset_bool(NeoMutt->sub, "mailcap_sanitize");
77 const char *cptr = mutt_buffer_string(command);
78 while (*cptr)
79 {
80 if (*cptr == '\\')
81 {
82 cptr++;
83 if (*cptr)
84 mutt_buffer_addch(buf, *cptr++);
85 }
86 else if (*cptr == '%')
87 {
88 cptr++;
89 if (*cptr == '{')
90 {
91 const char *pvalue2 = NULL;
92
93 if (param)
94 mutt_buffer_reset(param);
95 else
96 param = mutt_buffer_pool_get();
97
98 /* Copy parameter name into param buffer */
99 cptr++;
100 while (*cptr && (*cptr != '}'))
101 mutt_buffer_addch(param, *cptr++);
102
103 /* In send mode, use the current charset, since the message hasn't
104 * been converted yet. If noconv is set, then we assume the
105 * charset parameter has the correct value instead. */
106 if (mutt_istr_equal(mutt_buffer_string(param), "charset") && a->charset && !a->noconv)
107 pvalue2 = a->charset;
108 else
109 pvalue2 = mutt_param_get(&a->parameter, mutt_buffer_string(param));
110
111 /* Now copy the parameter value into param buffer */
112 if (c_mailcap_sanitize)
113 mutt_buffer_sanitize_filename(param, NONULL(pvalue2), false);
114 else
115 mutt_buffer_strcpy(param, NONULL(pvalue2));
116
119 }
120 else if ((*cptr == 's') && filename)
121 {
122 mutt_buffer_quote_filename(quoted, filename, true);
124 needspipe = false;
125 }
126 else if (*cptr == 't')
127 {
128 if (!type2)
129 {
130 type2 = mutt_buffer_pool_get();
131 if (c_mailcap_sanitize)
132 mutt_buffer_sanitize_filename(type2, type, false);
133 else
134 mutt_buffer_strcpy(type2, type);
135 }
138 }
139
140 if (*cptr)
141 cptr++;
142 }
143 else
144 mutt_buffer_addch(buf, *cptr++);
145 }
146 mutt_buffer_copy(command, buf);
147
152
153 return needspipe;
154}
size_t mutt_buffer_strcpy(struct Buffer *buf, const char *s)
Copy a string into a Buffer.
Definition: buffer.c:327
size_t mutt_buffer_addch(struct Buffer *buf, char c)
Add a single character to a Buffer.
Definition: buffer.c:248
size_t mutt_buffer_addstr(struct Buffer *buf, const char *s)
Add a string to a Buffer.
Definition: buffer.c:233
size_t mutt_buffer_copy(struct Buffer *dst, const struct Buffer *src)
Copy a Buffer's contents to another Buffer.
Definition: buffer.c:462
void mutt_buffer_reset(struct Buffer *buf)
Reset an existing Buffer.
Definition: buffer.c:85
static const char * mutt_buffer_string(const struct Buffer *buf)
Convert a buffer to a const char * "string".
Definition: buffer.h:77
bool cs_subset_bool(const struct ConfigSubset *sub, const char *name)
Get a boolean config item by name.
Definition: helpers.c:73
void mutt_buffer_quote_filename(struct Buffer *buf, const char *filename, bool add_outer)
Quote a filename to survive the shell's quoting rules.
Definition: file.c:891
bool mutt_istr_equal(const char *a, const char *b)
Compare two strings, ignoring case.
Definition: string.c:819
void mutt_buffer_sanitize_filename(struct Buffer *buf, const char *path, short slash)
Replace unsafe characters in a filename.
Definition: muttlib.c:1651
char * mutt_param_get(const struct ParameterList *pl, const char *s)
Find a matching Parameter.
Definition: parameter.c:84
void mutt_buffer_pool_release(struct Buffer **pbuf)
Free a Buffer from the pool.
Definition: pool.c:112
struct Buffer * mutt_buffer_pool_get(void)
Get a Buffer from the pool.
Definition: pool.c:101
#define NONULL(x)
Definition: string2.h:37
bool noconv
Don't do character set conversion.
Definition: body.h:46
char * charset
Send mode: charset of attached file as stored on disk.
Definition: body.h:78
struct ParameterList parameter
Parameters of the content-type.
Definition: body.h:62
String manipulation buffer.
Definition: buffer.h:34
Container for Accounts, Notifications.
Definition: neomutt.h:37
struct ConfigSubset * sub
Inherited config items.
Definition: neomutt.h:39
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◆ get_field()

static char * get_field ( char *  s)
static

NUL terminate a RFC1524 field.

Parameters
sString to alter
Return values
ptrStart of next field
NULLError

Definition at line 162 of file mailcap.c.

163{
164 if (!s)
165 return NULL;
166
167 char *ch = NULL;
168
169 while ((ch = strpbrk(s, ";\\")))
170 {
171 if (*ch == '\\')
172 {
173 s = ch + 1;
174 if (*s)
175 s++;
176 }
177 else
178 {
179 *ch = '\0';
180 ch = mutt_str_skip_email_wsp(ch + 1);
181 break;
182 }
183 }
185 return ch;
186}
void mutt_str_remove_trailing_ws(char *s)
Trim trailing whitespace from a string.
Definition: string.c:636
char * mutt_str_skip_email_wsp(const char *s)
Skip over whitespace as defined by RFC5322.
Definition: string.c:679
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◆ get_field_text()

static int get_field_text ( char *  field,
char **  entry,
const char *  type,
const char *  filename,
int  line 
)
static

Get the matching text from a mailcap.

Parameters
fieldString to parse
entrySave the entry here
typeType, e.g. "text/plain"
filenameMailcap filename
lineMailcap line
Return values
1Success
0Failure

Definition at line 198 of file mailcap.c.

200{
201 field = mutt_str_skip_whitespace(field);
202 if (*field == '=')
203 {
204 if (entry)
205 {
206 field++;
207 field = mutt_str_skip_whitespace(field);
208 mutt_str_replace(entry, field);
209 }
210 return 1;
211 }
212 else
213 {
214 mutt_error(_("Improperly formatted entry for type %s in \"%s\" line %d"),
215 type, filename, line);
216 return 0;
217 }
218}
#define mutt_error(...)
Definition: logging.h:87
#define _(a)
Definition: message.h:28
char * mutt_str_skip_whitespace(const char *p)
Find the first non-whitespace character in a string.
Definition: string.c:622
char * mutt_str_replace(char **p, const char *s)
Replace one string with another.
Definition: string.c:326
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◆ rfc1524_mailcap_parse()

static bool rfc1524_mailcap_parse ( struct Body a,
const char *  filename,
const char *  type,
struct MailcapEntry entry,
enum MailcapLookup  opt 
)
static

Parse a mailcap entry.

Parameters
aEmail Body
filenameFilename
typeType, e.g. "text/plain"
entryEntry, e.g. "compose"
optOption, see MailcapLookup
Return values
trueSuccess
falseFailure

Definition at line 230 of file mailcap.c.

232{
233 char *buf = NULL;
234 bool found = false;
235 int line = 0;
236
237 /* rfc1524 mailcap file is of the format:
238 * base/type; command; extradefs
239 * type can be * for matching all
240 * base with no /type is an implicit wild
241 * command contains a %s for the filename to pass, default to pipe on stdin
242 * extradefs are of the form:
243 * def1="definition"; def2="define \;";
244 * line wraps with a \ at the end of the line
245 * # for comments */
246
247 /* find length of basetype */
248 char *ch = strchr(type, '/');
249 if (!ch)
250 return false;
251 const int btlen = ch - type;
252
253 FILE *fp = fopen(filename, "r");
254 if (fp)
255 {
256 size_t buflen;
257 while (!found && (buf = mutt_file_read_line(buf, &buflen, fp, &line, MUTT_RL_CONT)))
258 {
259 /* ignore comments */
260 if (*buf == '#')
261 continue;
262 mutt_debug(LL_DEBUG2, "mailcap entry: %s\n", buf);
263
264 /* check type */
265 ch = get_field(buf);
266 if (!mutt_istr_equal(buf, type) && (!mutt_istrn_equal(buf, type, btlen) ||
267 ((buf[btlen] != '\0') && /* implicit wild */
268 !mutt_str_equal(buf + btlen, "/*")))) /* wildsubtype */
269 {
270 continue;
271 }
272
273 /* next field is the viewcommand */
274 char *field = ch;
275 ch = get_field(ch);
276 if (entry)
277 entry->command = mutt_str_dup(field);
278
279 /* parse the optional fields */
280 found = true;
281 bool copiousoutput = false;
282 bool composecommand = false;
283 bool editcommand = false;
284 bool printcommand = false;
285
286 while (ch)
287 {
288 field = ch;
289 ch = get_field(ch);
290 mutt_debug(LL_DEBUG2, "field: %s\n", field);
291 size_t plen;
292
293 if (mutt_istr_equal(field, "needsterminal"))
294 {
295 if (entry)
296 entry->needsterminal = true;
297 }
298 else if (mutt_istr_equal(field, "copiousoutput"))
299 {
300 copiousoutput = true;
301 if (entry)
302 entry->copiousoutput = true;
303 }
304 else if ((plen = mutt_istr_startswith(field, "composetyped")))
305 {
306 /* this compare most occur before compose to match correctly */
307 if (get_field_text(field + plen, entry ? &entry->composetypecommand : NULL,
308 type, filename, line))
309 {
310 composecommand = true;
311 }
312 }
313 else if ((plen = mutt_istr_startswith(field, "compose")))
314 {
315 if (get_field_text(field + plen, entry ? &entry->composecommand : NULL,
316 type, filename, line))
317 {
318 composecommand = true;
319 }
320 }
321 else if ((plen = mutt_istr_startswith(field, "print")))
322 {
323 if (get_field_text(field + plen, entry ? &entry->printcommand : NULL,
324 type, filename, line))
325 {
326 printcommand = true;
327 }
328 }
329 else if ((plen = mutt_istr_startswith(field, "edit")))
330 {
331 if (get_field_text(field + plen, entry ? &entry->editcommand : NULL,
332 type, filename, line))
333 {
334 editcommand = true;
335 }
336 }
337 else if ((plen = mutt_istr_startswith(field, "nametemplate")))
338 {
339 get_field_text(field + plen, entry ? &entry->nametemplate : NULL,
340 type, filename, line);
341 }
342 else if ((plen = mutt_istr_startswith(field, "x-convert")))
343 {
344 get_field_text(field + plen, entry ? &entry->convert : NULL, type, filename, line);
345 }
346 else if ((plen = mutt_istr_startswith(field, "test")))
347 {
348 /* This routine executes the given test command to determine
349 * if this is the right entry. */
350 char *test_command = NULL;
351
352 if (get_field_text(field + plen, &test_command, type, filename, line) && test_command)
353 {
354 struct Buffer *command = mutt_buffer_pool_get();
355 struct Buffer *afilename = mutt_buffer_pool_get();
356 mutt_buffer_strcpy(command, test_command);
357 const bool c_mailcap_sanitize = cs_subset_bool(NeoMutt->sub, "mailcap_sanitize");
358 if (c_mailcap_sanitize)
359 mutt_buffer_sanitize_filename(afilename, NONULL(a->filename), true);
360 else
361 mutt_buffer_strcpy(afilename, NONULL(a->filename));
362 mailcap_expand_command(a, mutt_buffer_string(afilename), type, command);
363 if (mutt_system(mutt_buffer_string(command)))
364 {
365 /* a non-zero exit code means test failed */
366 found = false;
367 }
368 FREE(&test_command);
369 mutt_buffer_pool_release(&command);
370 mutt_buffer_pool_release(&afilename);
371 }
372 }
373 else if (mutt_istr_startswith(field, "x-neomutt-keep"))
374 {
375 if (entry)
376 entry->xneomuttkeep = true;
377 }
378 else if (mutt_istr_startswith(field, "x-neomutt-nowrap"))
379 {
380 if (entry)
381 entry->xneomuttnowrap = true;
382 a->nowrap = true;
383 }
384 } /* while (ch) */
385
386 if (opt == MUTT_MC_AUTOVIEW)
387 {
388 if (!copiousoutput)
389 found = false;
390 }
391 else if (opt == MUTT_MC_COMPOSE)
392 {
393 if (!composecommand)
394 found = false;
395 }
396 else if (opt == MUTT_MC_EDIT)
397 {
398 if (!editcommand)
399 found = false;
400 }
401 else if (opt == MUTT_MC_PRINT)
402 {
403 if (!printcommand)
404 found = false;
405 }
406
407 if (!found)
408 {
409 /* reset */
410 if (entry)
411 {
412 FREE(&entry->command);
413 FREE(&entry->composecommand);
414 FREE(&entry->composetypecommand);
415 FREE(&entry->editcommand);
416 FREE(&entry->printcommand);
417 FREE(&entry->nametemplate);
418 FREE(&entry->convert);
419 entry->needsterminal = false;
420 entry->copiousoutput = false;
421 entry->xneomuttkeep = false;
422 }
423 }
424 } /* while (!found && (buf = mutt_file_read_line ())) */
425 mutt_file_fclose(&fp);
426 } /* if ((fp = fopen ())) */
427 FREE(&buf);
428 return found;
429}
char * mutt_file_read_line(char *line, size_t *size, FILE *fp, int *line_num, ReadLineFlags flags)
Read a line from a file.
Definition: file.c:720
int mutt_file_fclose(FILE **fp)
Close a FILE handle (and NULL the pointer)
Definition: file.c:152
#define MUTT_RL_CONT
-continuation
Definition: file.h:39
#define mutt_debug(LEVEL,...)
Definition: logging.h:84
@ LL_DEBUG2
Log at debug level 2.
Definition: logging.h:41
static int get_field_text(char *field, char **entry, const char *type, const char *filename, int line)
Get the matching text from a mailcap.
Definition: mailcap.c:198
static char * get_field(char *s)
NUL terminate a RFC1524 field.
Definition: mailcap.c:162
int mailcap_expand_command(struct Body *a, const char *filename, const char *type, struct Buffer *command)
Expand expandos in a command.
Definition: mailcap.c:67
@ MUTT_MC_PRINT
Mailcap print field.
Definition: mailcap.h:59
@ MUTT_MC_EDIT
Mailcap edit field.
Definition: mailcap.h:57
@ MUTT_MC_AUTOVIEW
Mailcap autoview field.
Definition: mailcap.h:60
@ MUTT_MC_COMPOSE
Mailcap compose field.
Definition: mailcap.h:58
#define FREE(x)
Definition: memory.h:43
char * mutt_str_dup(const char *str)
Copy a string, safely.
Definition: string.c:250
bool mutt_str_equal(const char *a, const char *b)
Compare two strings.
Definition: string.c:807
size_t mutt_istr_startswith(const char *str, const char *prefix)
Check whether a string starts with a prefix, ignoring case.
Definition: string.c:239
bool mutt_istrn_equal(const char *a, const char *b, size_t num)
Check for equality of two strings ignoring case (to a maximum), safely.
Definition: string.c:524
static size_t plen
Length of cached packet.
Definition: pgppacket.c:39
int mutt_system(const char *cmd)
Run an external command.
Definition: system.c:51
bool nowrap
Do not wrap the output in the pager.
Definition: body.h:88
char * filename
When sending a message, this is the file to which this structure refers.
Definition: body.h:58
char * composecommand
Definition: mailcap.h:39
bool needsterminal
endwin() and system
Definition: mailcap.h:45
char * nametemplate
Definition: mailcap.h:43
char * printcommand
Definition: mailcap.h:42
char * composetypecommand
Definition: mailcap.h:40
char * editcommand
Definition: mailcap.h:41
char * command
Definition: mailcap.h:37
bool copiousoutput
needs pager, basically
Definition: mailcap.h:46
bool xneomuttkeep
do not remove the file on command exit
Definition: mailcap.h:47
char * convert
Definition: mailcap.h:44
bool xneomuttnowrap
do not wrap the output in the pager
Definition: mailcap.h:48
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◆ mailcap_entry_new()

struct MailcapEntry * mailcap_entry_new ( void  )

Allocate memory for a new rfc1524 entry.

Return values
ptrAn un-initialized struct MailcapEntry

Definition at line 435 of file mailcap.c.

436{
437 return mutt_mem_calloc(1, sizeof(struct MailcapEntry));
438}
void * mutt_mem_calloc(size_t nmemb, size_t size)
Allocate zeroed memory on the heap.
Definition: memory.c:50
A mailcap entry.
Definition: mailcap.h:36
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◆ mailcap_entry_free()

void mailcap_entry_free ( struct MailcapEntry **  ptr)

Deallocate an struct MailcapEntry.

Parameters
[out]ptrMailcapEntry to deallocate

Definition at line 444 of file mailcap.c.

445{
446 if (!ptr || !*ptr)
447 return;
448
449 struct MailcapEntry *me = *ptr;
450
451 FREE(&me->command);
452 FREE(&me->testcommand);
453 FREE(&me->composecommand);
455 FREE(&me->editcommand);
456 FREE(&me->printcommand);
457 FREE(&me->nametemplate);
458 FREE(ptr);
459}
char * testcommand
Definition: mailcap.h:38
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◆ mailcap_lookup()

bool mailcap_lookup ( struct Body a,
char *  type,
size_t  typelen,
struct MailcapEntry entry,
enum MailcapLookup  opt 
)

Find given type in the list of mailcap files.

Parameters
aMessage body
typeText type in "type/subtype" format
typelenLength of the type
entrystruct MailcapEntry to populate with results
optType of mailcap entry to lookup, see MailcapLookup
Return values
trueIf *entry is not NULL it populates it with the mailcap entry
falseNo matching entry is found

Find the given type in the list of mailcap files.

Definition at line 473 of file mailcap.c.

475{
476 /* rfc1524 specifies that a path of mailcap files should be searched.
477 * joy. They say
478 * $HOME/.mailcap:/etc/mailcap:/usr/etc/mailcap:/usr/local/etc/mailcap, etc
479 * and overridden by the MAILCAPS environment variable, and, just to be nice,
480 * we'll make it specifiable in .neomuttrc */
481 const struct Slist *c_mailcap_path = cs_subset_slist(NeoMutt->sub, "mailcap_path");
482 if (!c_mailcap_path || (c_mailcap_path->count == 0))
483 {
484 /* L10N:
485 Mutt is trying to look up a mailcap value, but $mailcap_path is empty.
486 We added a reference to the MAILCAPS environment variable as a hint too.
487
488 Because the variable is automatically populated by Mutt, this
489 should only occur if the user deliberately runs in their shell:
490 export MAILCAPS=
491
492 or deliberately runs inside Mutt or their .muttrc:
493 set mailcap_path=""
494 -or-
495 unset mailcap_path
496 */
497 mutt_error(_("Neither mailcap_path nor MAILCAPS specified"));
498 return false;
499 }
500
501 mutt_check_lookup_list(a, type, typelen);
502
503 struct Buffer *path = mutt_buffer_pool_get();
504 bool found = false;
505
506 struct ListNode *np = NULL;
507 STAILQ_FOREACH(np, &c_mailcap_path->head, entries)
508 {
509 mutt_buffer_strcpy(path, np->data);
511
512 mutt_debug(LL_DEBUG2, "Checking mailcap file: %s\n", mutt_buffer_string(path));
513 found = rfc1524_mailcap_parse(a, mutt_buffer_string(path), type, entry, opt);
514 if (found)
515 break;
516 }
517
519
520 if (entry && !found)
521 mutt_error(_("mailcap entry for type %s not found"), type);
522
523 return found;
524}
const struct Slist * cs_subset_slist(const struct ConfigSubset *sub, const char *name)
Get a string-list config item by name.
Definition: helpers.c:268
static bool rfc1524_mailcap_parse(struct Body *a, const char *filename, const char *type, struct MailcapEntry *entry, enum MailcapLookup opt)
Parse a mailcap entry.
Definition: mailcap.c:230
void mutt_check_lookup_list(struct Body *b, char *type, size_t len)
Update the mime type.
Definition: mutt_attach.c:336
void mutt_buffer_expand_path(struct Buffer *buf)
Create the canonical path.
Definition: muttlib.c:322
#define STAILQ_FOREACH(var, head, field)
Definition: queue.h:352
A List node for strings.
Definition: list.h:35
char * data
String.
Definition: list.h:36
String list.
Definition: slist.h:47
struct ListHead head
List containing values.
Definition: slist.h:48
size_t count
Number of values in list.
Definition: slist.h:49
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◆ mailcap_expand_filename()

void mailcap_expand_filename ( const char *  nametemplate,
const char *  oldfile,
struct Buffer newfile 
)

Expand a new filename from a template or existing filename.

Parameters
nametemplateTemplate
oldfileOriginal filename
newfileBuffer for new filename

If there is no nametemplate, the stripped oldfile name is used as the template for newfile.

If there is no oldfile, the stripped nametemplate name is used as the template for newfile.

If both a nametemplate and oldfile are specified, the template is checked for a "%s". If none is found, the nametemplate is used as the template for newfile. The first path component of the nametemplate and oldfile are ignored.

Definition at line 542 of file mailcap.c.

544{
545 int i, j, k;
546 char *s = NULL;
547 bool lmatch = false, rmatch = false;
548
549 mutt_buffer_reset(newfile);
550
551 /* first, ignore leading path components */
552
553 if (nametemplate && (s = strrchr(nametemplate, '/')))
554 nametemplate = s + 1;
555
556 if (oldfile && (s = strrchr(oldfile, '/')))
557 oldfile = s + 1;
558
559 if (!nametemplate)
560 {
561 if (oldfile)
562 mutt_buffer_strcpy(newfile, oldfile);
563 }
564 else if (!oldfile)
565 {
566 mutt_file_expand_fmt(newfile, nametemplate, "neomutt");
567 }
568 else /* oldfile && nametemplate */
569 {
570 /* first, compare everything left from the "%s"
571 * (if there is one). */
572
573 lmatch = true;
574 bool ps = false;
575 for (i = 0; nametemplate[i]; i++)
576 {
577 if ((nametemplate[i] == '%') && (nametemplate[i + 1] == 's'))
578 {
579 ps = true;
580 break;
581 }
582
583 /* note that the following will _not_ read beyond oldfile's end. */
584
585 if (lmatch && (nametemplate[i] != oldfile[i]))
586 lmatch = false;
587 }
588
589 if (ps)
590 {
591 /* If we had a "%s", check the rest. */
592
593 /* now, for the right part: compare everything right from
594 * the "%s" to the final part of oldfile.
595 *
596 * The logic here is as follows:
597 *
598 * - We start reading from the end.
599 * - There must be a match _right_ from the "%s",
600 * thus the i + 2.
601 * - If there was a left hand match, this stuff
602 * must not be counted again. That's done by the
603 * condition (j >= (lmatch ? i : 0)). */
604
605 rmatch = true;
606
607 for (j = mutt_str_len(oldfile) - 1, k = mutt_str_len(nametemplate) - 1;
608 (j >= (lmatch ? i : 0)) && (k >= (i + 2)); j--, k--)
609 {
610 if (nametemplate[k] != oldfile[j])
611 {
612 rmatch = false;
613 break;
614 }
615 }
616
617 /* Now, check if we had a full match. */
618
619 if (k >= i + 2)
620 rmatch = false;
621
622 struct Buffer *left = mutt_buffer_pool_get();
623 struct Buffer *right = mutt_buffer_pool_get();
624
625 if (!lmatch)
626 mutt_buffer_strcpy_n(left, nametemplate, i);
627 if (!rmatch)
628 mutt_buffer_strcpy(right, nametemplate + i + 2);
629 mutt_buffer_printf(newfile, "%s%s%s", mutt_buffer_string(left), oldfile,
630 mutt_buffer_string(right));
631
634 }
635 else
636 {
637 /* no "%s" in the name template. */
638 mutt_buffer_strcpy(newfile, nametemplate);
639 }
640 }
641
642 mutt_adv_mktemp(newfile);
643}
int mutt_buffer_printf(struct Buffer *buf, const char *fmt,...)
Format a string overwriting a Buffer.
Definition: buffer.c:168
size_t mutt_buffer_strcpy_n(struct Buffer *buf, const char *s, size_t len)
Copy a string into a Buffer.
Definition: buffer.c:342
void mutt_file_expand_fmt(struct Buffer *dest, const char *fmt, const char *src)
Replace s in a string with a filename.
Definition: file.c:1503
size_t mutt_str_len(const char *a)
Calculate the length of a string, safely.
Definition: string.c:567
void mutt_adv_mktemp(struct Buffer *buf)
Create a temporary file.
Definition: muttlib.c:84
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