version 1.4, 2015/07/25 14:02:06 |
version 1.11, 2015/11/20 21:59:54 |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
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#include "config.h" |
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#include <sys/types.h> |
#include <sys/types.h> |
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#include <signal.h> |
#include <signal.h> |
#include <stddef.h> |
#include <stddef.h> |
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#include <stdint.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
#include <string.h> |
#include <string.h> |
#include <unistd.h> |
#include <unistd.h> |
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#if HAVE_OHASH |
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#include <ohash.h> |
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#else |
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#include "compat_ohash.h" |
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#endif |
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#include "mandoc_aux.h" |
#include "mandoc_aux.h" |
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#include "mandoc_ohash.h" |
#include "tag.h" |
#include "tag.h" |
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struct tag_entry { |
struct tag_entry { |
Line 39 struct tag_entry { |
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Line 37 struct tag_entry { |
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}; |
}; |
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static void tag_signal(int); |
static void tag_signal(int); |
static void *tag_alloc(size_t, void *); |
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static void tag_free(void *, void *); |
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static void *tag_calloc(size_t, size_t, void *); |
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static struct ohash tag_data; |
static struct ohash tag_data; |
static char *tag_fn = NULL; |
static struct tag_files tag_files; |
static int tag_fd = -1; |
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/* |
/* |
* Set up the ohash table to collect output line numbers |
* Prepare for using a pager. |
* where various marked-up terms are documented and create |
* Not all pagers are capable of using a tag file, |
* the temporary tags file, saving the name for the pager. |
* but for simplicity, create it anyway. |
*/ |
*/ |
char * |
struct tag_files * |
tag_init(void) |
tag_init(void) |
{ |
{ |
struct ohash_info tag_info; |
struct sigaction sa; |
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int ofd; |
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tag_fn = mandoc_strdup("/tmp/man.XXXXXXXXXX"); |
ofd = -1; |
signal(SIGHUP, tag_signal); |
tag_files.tfd = -1; |
signal(SIGINT, tag_signal); |
tag_files.tcpgid = -1; |
signal(SIGTERM, tag_signal); |
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if ((tag_fd = mkstemp(tag_fn)) == -1) { |
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free(tag_fn); |
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tag_fn = NULL; |
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return(NULL); |
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} |
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tag_info.alloc = tag_alloc; |
/* Save the original standard output for use by the pager. */ |
tag_info.calloc = tag_calloc; |
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tag_info.free = tag_free; |
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tag_info.key_offset = offsetof(struct tag_entry, s); |
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tag_info.data = NULL; |
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ohash_init(&tag_data, 4, &tag_info); |
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return(tag_fn); |
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} |
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/* |
if ((tag_files.ofd = dup(STDOUT_FILENO)) == -1) |
* Return the line number where a term is defined, |
goto fail; |
* or 0 if the term is unknown. |
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*/ |
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size_t |
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tag_get(const char *s, size_t len, int prio) |
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{ |
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struct tag_entry *entry; |
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const char *end; |
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unsigned int slot; |
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if (tag_fd == -1) |
/* Create both temporary output files. */ |
return(0); |
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if (len == 0) |
(void)strlcpy(tag_files.ofn, "/tmp/man.XXXXXXXXXX", |
len = strlen(s); |
sizeof(tag_files.ofn)); |
end = s + len; |
(void)strlcpy(tag_files.tfn, "/tmp/man.XXXXXXXXXX", |
slot = ohash_qlookupi(&tag_data, s, &end); |
sizeof(tag_files.tfn)); |
entry = ohash_find(&tag_data, slot); |
memset(&sa, 0, sizeof(sa)); |
return((entry == NULL || prio < entry->prio) ? 0 : entry->line); |
sigfillset(&sa.sa_mask); |
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sa.sa_handler = tag_signal; |
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sigaction(SIGHUP, &sa, NULL); |
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sigaction(SIGINT, &sa, NULL); |
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sigaction(SIGTERM, &sa, NULL); |
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if ((ofd = mkstemp(tag_files.ofn)) == -1) |
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goto fail; |
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if ((tag_files.tfd = mkstemp(tag_files.tfn)) == -1) |
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goto fail; |
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if (dup2(ofd, STDOUT_FILENO) == -1) |
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goto fail; |
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close(ofd); |
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/* |
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* Set up the ohash table to collect output line numbers |
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* where various marked-up terms are documented. |
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*/ |
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mandoc_ohash_init(&tag_data, 4, offsetof(struct tag_entry, s)); |
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return &tag_files; |
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fail: |
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tag_unlink(); |
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if (ofd != -1) |
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close(ofd); |
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if (tag_files.ofd != -1) |
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close(tag_files.ofd); |
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if (tag_files.tfd != -1) |
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close(tag_files.tfd); |
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*tag_files.ofn = '\0'; |
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*tag_files.tfn = '\0'; |
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tag_files.ofd = -1; |
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tag_files.tfd = -1; |
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return NULL; |
} |
} |
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/* |
/* |
* Set the line number where a term is defined. |
* Set the line number where a term is defined, |
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* unless it is already defined at a higher priority. |
*/ |
*/ |
void |
void |
tag_put(const char *s, size_t len, int prio, size_t line) |
tag_put(const char *s, int prio, size_t line) |
{ |
{ |
struct tag_entry *entry; |
struct tag_entry *entry; |
const char *end; |
size_t len; |
unsigned int slot; |
unsigned int slot; |
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if (tag_fd == -1) |
if (tag_files.tfd <= 0 || strchr(s, ' ') != NULL) |
return; |
return; |
if (len == 0) |
slot = ohash_qlookup(&tag_data, s); |
len = strlen(s); |
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end = s + len; |
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slot = ohash_qlookupi(&tag_data, s, &end); |
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entry = ohash_find(&tag_data, slot); |
entry = ohash_find(&tag_data, slot); |
if (entry == NULL) { |
if (entry == NULL) { |
entry = mandoc_malloc(sizeof(*entry) + len + 1); |
len = strlen(s) + 1; |
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entry = mandoc_malloc(sizeof(*entry) + len); |
memcpy(entry->s, s, len); |
memcpy(entry->s, s, len); |
entry->s[len] = '\0'; |
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ohash_insert(&tag_data, slot, entry); |
ohash_insert(&tag_data, slot, entry); |
} |
} else if (entry->prio <= prio) |
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return; |
entry->line = line; |
entry->line = line; |
entry->prio = prio; |
entry->prio = prio; |
} |
} |
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struct tag_entry *entry; |
struct tag_entry *entry; |
unsigned int slot; |
unsigned int slot; |
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if (tag_fd == -1) |
if (tag_files.tfd <= 0) |
return; |
return; |
stream = fdopen(tag_fd, "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) |
fprintf(stream, "%s - %zu\n", entry->s, entry->line); |
fprintf(stream, "%s %s %zu\n", |
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entry->s, tag_files.ofn, entry->line); |
free(entry); |
free(entry); |
entry = ohash_next(&tag_data, &slot); |
entry = ohash_next(&tag_data, &slot); |
} |
} |
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void |
void |
tag_unlink(void) |
tag_unlink(void) |
{ |
{ |
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pid_t tc_pgid; |
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if (tag_fn != NULL) |
if (tag_files.tcpgid != -1) { |
unlink(tag_fn); |
tc_pgid = tcgetpgrp(STDIN_FILENO); |
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if (tc_pgid == tag_files.pager_pid || |
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tc_pgid == getpgid(0) || |
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getpgid(tc_pgid) == -1) |
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(void)tcsetpgrp(STDIN_FILENO, tag_files.tcpgid); |
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} |
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if (*tag_files.ofn != '\0') |
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unlink(tag_files.ofn); |
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if (*tag_files.tfn != '\0') |
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unlink(tag_files.tfn); |
} |
} |
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static void |
static void |
tag_signal(int signum) |
tag_signal(int signum) |
{ |
{ |
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struct sigaction sa; |
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tag_unlink(); |
tag_unlink(); |
signal(signum, SIG_DFL); |
memset(&sa, 0, sizeof(sa)); |
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sigemptyset(&sa.sa_mask); |
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sa.sa_handler = SIG_DFL; |
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sigaction(signum, &sa, NULL); |
kill(getpid(), signum); |
kill(getpid(), signum); |
/* NOTREACHED */ |
/* NOTREACHED */ |
_exit(1); |
_exit(1); |
} |
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/* |
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* Memory management callback functions for ohash. |
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*/ |
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static void * |
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tag_alloc(size_t sz, void *arg) |
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{ |
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return(mandoc_malloc(sz)); |
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} |
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static void * |
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tag_calloc(size_t nmemb, size_t sz, void *arg) |
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{ |
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return(mandoc_calloc(nmemb, sz)); |
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} |
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static void |
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tag_free(void *p, void *arg) |
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{ |
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free(p); |
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} |
} |