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Expand leading tildes in arguments, from Tiage Cunha.

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This commit is contained in:
Nicholas Marriott 2009-07-13 18:49:36 +00:00
parent cf411053c7
commit cba885a67c
1 changed files with 42 additions and 0 deletions
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42
cmd-string.c
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@ -19,9 +19,11 @@
#include <sys/types.h>
#include <errno.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "tmux.h"
@ -33,6 +35,7 @@ int cmd_string_getc(const char *, size_t *);
void cmd_string_ungetc(const char *, size_t *);
char *cmd_string_string(const char *, size_t *, char, int);
char *cmd_string_variable(const char *, size_t *);
char *cmd_string_expand_tilde(const char *, size_t *);
int
cmd_string_getc(const char *s, size_t *p)
@ -154,6 +157,17 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist, char **cause)
rval = 0;
goto out;
case '~':
if (have_arg == 0) {
if ((t = cmd_string_expand_tilde(s, &p)) == NULL)
goto error;
buf = xrealloc(buf, 1, len + strlen(t) + 1);
strlcpy(buf + len, t, strlen(t) + 1);
len += strlen(t);
xfree(t);
break;
}
/* FALLTHROUGH */
default:
if (len >= SIZE_MAX - 2)
goto error;
@ -309,3 +323,31 @@ error:
xfree(buf);
return (NULL);
}
char *
cmd_string_expand_tilde(const char *s, size_t *p)
{
struct passwd *pw;
char *home, *path, *username;
home = NULL;
if (cmd_string_getc(s, p) == '/') {
if ((home = getenv("HOME")) == NULL) {
if ((pw = getpwuid(getuid())) != NULL)
home = pw->pw_dir;
}
} else {
cmd_string_ungetc(s, p);
if ((username = cmd_string_string(s, p, '/', 0)) == NULL)
return (NULL);
if ((pw = getpwnam(username)) != NULL)
home = pw->pw_dir;
if (username != NULL)
xfree(username);
}
if (home == NULL)
return (NULL);
xasprintf(&path, "%s/", home);
return (path);
}