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/*
rc-misc.c
rc misc functions
Copyright 2007 Gentoo Foundation
*/
#include "librc.h"
bool rc_env_bool (const char *var)
{
char *v;
if (! var)
return (false);
if (! (v = getenv (var))) {
errno = ENOENT;
return (false);
}
if (strcasecmp (v, "true") == 0 ||
strcasecmp (v, "y") == 0 ||
strcasecmp (v, "yes") == 0 ||
strcasecmp (v, "1") == 0)
return (true);
if (strcasecmp (v, "false") != 0 &&
strcasecmp (v, "n") != 0 &&
strcasecmp (v, "no") != 0 &&
strcasecmp (v, "0") != 0)
errno = EINVAL;
return (false);
}
librc_hidden_def(rc_env_bool)
char *rc_strcatpaths (const char *path1, const char *paths, ...)
{
va_list ap;
int length;
int i;
char *p;
char *path;
char *pathp;
if (! path1 || ! paths)
return (NULL);
length = strlen (path1) + strlen (paths) + 1;
if (*paths != '/')
length ++;
va_start (ap, paths);
while ((p = va_arg (ap, char *)) != NULL) {
if (*p != '/')
length ++;
length += strlen (p);
}
va_end (ap);
pathp = path = xmalloc (length * sizeof (char));
memset (path, 0, length);
i = strlen (path1);
memcpy (path, path1, i);
pathp += i;
if (*paths != '/')
*pathp ++ = '/';
i = strlen (paths);
memcpy (pathp, paths, i);
pathp += i;
va_start (ap, paths);
while ((p = va_arg (ap, char *)) != NULL) {
if (*p != '/')
*pathp ++= '/';
i = strlen (p);
memcpy (pathp, p, i);
pathp += i;
}
va_end (ap);
*pathp++ = 0;
return (path);
}
librc_hidden_def(rc_strcatpaths)
char **rc_config_load (const char *file)
{
char **list = NULL;
FILE *fp;
char *buffer;
char *p;
char *token;
char *line;
char *linep;
char *linetok;
int i = 0;
bool replaced;
char *entry;
char *newline;
if (! (fp = fopen (file, "r")))
return (NULL);
buffer = xmalloc (sizeof (char) * RC_LINEBUFFER);
while (fgets (buffer, RC_LINEBUFFER, fp)) {
p = buffer;
/* Strip leading spaces/tabs */
while ((*p == ' ') || (*p == '\t'))
p++;
if (! p || strlen (p) < 3 || p[0] == '#')
continue;
/* Get entry */
token = strsep (&p, "=");
if (! token)
continue;
entry = xstrdup (token);
/* Preserve shell coloring */
if (*p == '$')
token = p;
else
do {
/* Bash variables are usually quoted */
token = strsep (&p, "\"\'");
} while ((token) && (strlen (token) == 0));
/* Drop a newline if that's all we have */
i = strlen (token) - 1;
if (token[i] == 10)
token[i] = 0;
i = strlen (entry) + strlen (token) + 2;
newline = xmalloc (i);
snprintf (newline, i, "%s=%s", entry, token);
replaced = false;
/* In shells the last item takes precedence, so we need to remove
any prior values we may already have */
STRLIST_FOREACH (list, line, i) {
char *tmp = xstrdup (line);
linep = tmp;
linetok = strsep (&linep, "=");
if (strcmp (linetok, entry) == 0) {
/* We have a match now - to save time we directly replace it */
free (list[i - 1]);
list[i - 1] = newline;
replaced = true;
free (tmp);
break;
}
free (tmp);
}
if (! replaced) {
rc_strlist_addsort (&list, newline);
free (newline);
}
free (entry);
}
free (buffer);
fclose (fp);
return (list);
}
librc_hidden_def(rc_config_load)
char *rc_config_value (char **list, const char *entry)
{
char *line;
int i;
char *p;
STRLIST_FOREACH (list, line, i) {
p = strchr (line, '=');
if (p && strncmp (entry, line, p - line) == 0)
return (p += 1);
}
return (NULL);
}
librc_hidden_def(rc_config_value)
char **rc_config_list (const char *file)
{
FILE *fp;
char *buffer;
char *p;
char *token;
char **list = NULL;
if (! (fp = fopen (file, "r")))
return (NULL);
buffer = xmalloc (sizeof (char) * RC_LINEBUFFER);
while (fgets (buffer, RC_LINEBUFFER, fp)) {
p = buffer;
/* Strip leading spaces/tabs */
while ((*p == ' ') || (*p == '\t'))
p++;
/* Get entry - we do not want comments */
token = strsep (&p, "#");
if (token && (strlen (token) > 1)) {
/* Stip the newline if present */
if (token[strlen (token) - 1] == '\n')
token[strlen (token) - 1] = 0;
rc_strlist_add (&list, token);
}
}
free (buffer);
fclose (fp);
return (list);
}
librc_hidden_def(rc_config_list)
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