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/*
* Copyright (c) Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "config.h"
#if HAVE_SYS_QUEUE
# include <sys/queue.h>
#endif
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lowdown.h"
#include "extern.h"
/*
* Convert the "$Date$" string to a simple ISO date in a
* static buffer.
* Returns NULL if the string is malformed at all or the date otherwise.
*/
char *
rcsdate2str(const char *v)
{
unsigned int y, m, d, h, min, s;
int rc;
static char buf[32];
if (v == NULL || strlen(v) < 12)
return NULL;
/* Escaped dollar sign. */
if ('\\' == v[0])
v++;
/* Date and perforce datetime. */
if (strncmp(v, "$Date: ", 7) == 0)
v += 7;
else if (strncmp(v, "$DateTime: ", 11) == 0)
v += 11;
else
return NULL;
/*
* Try for long and short format dates.
* Use regular forward slash and HTML escapes.
*/
rc = sscanf(v, "%u/%u/%u %u:%u:%u",
&y, &m, &d, &h, &min, &s);
if (rc != 6)
rc = sscanf(v, "%u/%u/%u %u:%u:%u",
&y, &m, &d, &h, &min, &s);
if (rc != 6) {
rc = sscanf(v, "%u/%u/%u", &y, &m, &d);
if (rc != 3)
rc = sscanf(v, "%u/%u/%u", &y, &m, &d);
if (rc != 3)
return NULL;
}
snprintf(buf, sizeof(buf), "%u-%.2u-%.2u", y, m, d);
return buf;
}
/*
* Convert the "$Author$" string to just the author in a static
* buffer of a fixed length.
* Returns NULL if the string is malformed (too long, too short, etc.)
* at all or the author name otherwise.
*/
char *
rcsauthor2str(const char *v)
{
static char buf[1024];
size_t sz;
if (v == NULL || strlen(v) < 12)
return NULL;
/* Check for LaTeX. */
if ('\\' == v[0])
v++;
if (strncmp(v, "$Author: ", 9))
return NULL;
if ((sz = strlcpy(buf, v + 9, sizeof(buf))) >= sizeof(buf))
return NULL;
/* Strip end (with LaTeX). */
if (sz && buf[sz - 1] == '$') {
buf[--sz] = '\0';
if (sz && buf[sz - 1] == '\\')
buf[--sz] = '\0';
if (sz && buf[sz - 1] == ' ')
buf[--sz] = '\0';
}
return buf;
}
struct lowdown_meta *
lowdown_get_meta(const struct lowdown_node *n, struct lowdown_metaq *mq)
{
struct lowdown_meta *m, *ret = NULL;
struct lowdown_buf *ob = NULL;
const struct lowdown_node *child;
const struct rndr_meta *params = &n->rndr_meta;
assert(n->type == LOWDOWN_META);
if ((m = calloc(1, sizeof(struct lowdown_meta))) == NULL)
goto out;
TAILQ_INSERT_TAIL(mq, m, entries);
m->key = strndup(params->key.data, params->key.size);
if (m->key == NULL)
goto out;
/*
* (Re-)Concatenate all child text, but discard any escaping,
* which is handled when the metadata is written to output.
*/
if ((ob = hbuf_new(32)) == NULL)
goto out;
TAILQ_FOREACH(child, &n->children, entries) {
assert(child->type == LOWDOWN_NORMAL_TEXT);
if (!hbuf_putb(ob, &child->rndr_normal_text.text))
goto out;
}
m->value = ob->size == 0 ?
strdup("") : strndup(ob->data, ob->size);
if (m->value == NULL)
goto out;
ret = m;
out:
hbuf_free(ob);
return ret;
}
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