version 1.12, 2016/07/08 20:42:15 |
version 1.21, 2018/11/22 11:30:23 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org> |
* Copyright (c) 2015, 2016, 2018 Ingo Schwarze <schwarze@openbsd.org> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
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#include <sys/types.h> |
#include <sys/types.h> |
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#if HAVE_ERR |
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#include <err.h> |
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#endif |
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#include <limits.h> |
#include <signal.h> |
#include <signal.h> |
#include <stddef.h> |
#include <stddef.h> |
#include <stdint.h> |
#include <stdint.h> |
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#include "tag.h" |
#include "tag.h" |
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struct tag_entry { |
struct tag_entry { |
size_t line; |
size_t *lines; |
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size_t maxlines; |
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size_t nlines; |
int prio; |
int prio; |
char s[]; |
char s[]; |
}; |
}; |
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static void tag_signal(int); |
static void tag_signal(int) __attribute__((__noreturn__)); |
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static struct ohash tag_data; |
static struct ohash tag_data; |
static struct tag_files tag_files; |
static struct tag_files tag_files; |
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/* |
/* |
* Set the line number where a term is defined, |
* Set the line number where a term is defined, |
* unless it is already defined at a higher priority. |
* unless it is already defined at a lower priority. |
*/ |
*/ |
void |
void |
tag_put(const char *s, int prio, size_t line) |
tag_put(const char *s, int prio, size_t line) |
{ |
{ |
struct tag_entry *entry; |
struct tag_entry *entry; |
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const char *se; |
size_t len; |
size_t len; |
unsigned int slot; |
unsigned int slot; |
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if (tag_files.tfd <= 0 || strchr(s, ' ') != NULL) |
if (tag_files.tfd <= 0) |
return; |
return; |
slot = ohash_qlookup(&tag_data, s); |
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if (s[0] == '\\' && (s[1] == '&' || s[1] == 'e')) |
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s += 2; |
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/* |
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* Skip whitespace and whatever follows it, |
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* and if there is any, downgrade the priority. |
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*/ |
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len = strcspn(s, " \t"); |
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if (len == 0) |
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return; |
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se = s + len; |
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if (*se != '\0') |
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prio = INT_MAX; |
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slot = ohash_qlookupi(&tag_data, s, &se); |
entry = ohash_find(&tag_data, slot); |
entry = ohash_find(&tag_data, slot); |
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if (entry == NULL) { |
if (entry == NULL) { |
len = strlen(s) + 1; |
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entry = mandoc_malloc(sizeof(*entry) + len); |
/* Build a new entry. */ |
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entry = mandoc_malloc(sizeof(*entry) + len + 1); |
memcpy(entry->s, s, len); |
memcpy(entry->s, s, len); |
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entry->s[len] = '\0'; |
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entry->lines = NULL; |
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entry->maxlines = entry->nlines = 0; |
ohash_insert(&tag_data, slot, entry); |
ohash_insert(&tag_data, slot, entry); |
} else if (entry->prio <= prio) |
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return; |
} else { |
entry->line = line; |
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/* |
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* Lower priority numbers take precedence, |
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* but 0 is special. |
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* A tag with priority 0 is only used |
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* if the tag occurs exactly once. |
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*/ |
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if (prio == 0) { |
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if (entry->prio == 0) |
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entry->prio = -1; |
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return; |
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} |
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/* A better entry is already present, ignore the new one. */ |
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if (entry->prio > 0 && entry->prio < prio) |
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return; |
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/* The existing entry is worse, clear it. */ |
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if (entry->prio < 1 || entry->prio > prio) |
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entry->nlines = 0; |
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} |
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/* Remember the new line. */ |
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if (entry->maxlines == entry->nlines) { |
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entry->maxlines += 4; |
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entry->lines = mandoc_reallocarray(entry->lines, |
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entry->maxlines, sizeof(*entry->lines)); |
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} |
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entry->lines[entry->nlines++] = line; |
entry->prio = prio; |
entry->prio = prio; |
} |
} |
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{ |
{ |
FILE *stream; |
FILE *stream; |
struct tag_entry *entry; |
struct tag_entry *entry; |
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size_t i; |
unsigned int slot; |
unsigned int slot; |
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if (tag_files.tfd <= 0) |
if (tag_files.tfd <= 0) |
return; |
return; |
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if (tag_files.tagname != NULL && ohash_find(&tag_data, |
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ohash_qlookup(&tag_data, tag_files.tagname)) == NULL) { |
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warnx("%s: no such tag", tag_files.tagname); |
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tag_files.tagname = NULL; |
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} |
stream = fdopen(tag_files.tfd, "w"); |
stream = fdopen(tag_files.tfd, "w"); |
entry = ohash_first(&tag_data, &slot); |
entry = ohash_first(&tag_data, &slot); |
while (entry != NULL) { |
while (entry != NULL) { |
if (stream != NULL) |
if (stream != NULL && entry->prio >= 0) |
fprintf(stream, "%s %s %zu\n", |
for (i = 0; i < entry->nlines; i++) |
entry->s, tag_files.ofn, entry->line); |
fprintf(stream, "%s %s %zu\n", |
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entry->s, tag_files.ofn, entry->lines[i]); |
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free(entry->lines); |
free(entry); |
free(entry); |
entry = ohash_next(&tag_data, &slot); |
entry = ohash_next(&tag_data, &slot); |
} |
} |
ohash_delete(&tag_data); |
ohash_delete(&tag_data); |
if (stream != NULL) |
if (stream != NULL) |
fclose(stream); |
fclose(stream); |
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else |
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close(tag_files.tfd); |
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tag_files.tfd = -1; |
} |
} |
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void |
void |
Line 176 tag_unlink(void) |
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Line 249 tag_unlink(void) |
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pid_t tc_pgid; |
pid_t tc_pgid; |
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if (tag_files.tcpgid != -1) { |
if (tag_files.tcpgid != -1) { |
tc_pgid = tcgetpgrp(STDIN_FILENO); |
tc_pgid = tcgetpgrp(tag_files.ofd); |
if (tc_pgid == tag_files.pager_pid || |
if (tc_pgid == tag_files.pager_pid || |
tc_pgid == getpgid(0) || |
tc_pgid == getpgid(0) || |
getpgid(tc_pgid) == -1) |
getpgid(tc_pgid) == -1) |
(void)tcsetpgrp(STDIN_FILENO, tag_files.tcpgid); |
(void)tcsetpgrp(tag_files.ofd, tag_files.tcpgid); |
} |
} |
if (*tag_files.ofn != '\0') |
if (*tag_files.ofn != '\0') |
unlink(tag_files.ofn); |
unlink(tag_files.ofn); |