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Simplify mch_can_exe extracting is_executable_in_path.

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Thomas Wienecke 2014-03-06 14:44:07 +01:00 committed by Thiago de Arruda
parent ef03a8c52a
commit 9fc67aa7a3
1 changed files with 31 additions and 32 deletions
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63
src/os/fs.c
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@ -212,31 +212,16 @@ static int is_executable(char_u *name)
return FALSE;
}
/*
* Return 1 if "name" can be found in $PATH and executed, 0 if not.
* Return -1 if unknown.
*/
int mch_can_exe(char_u *name)
static int is_executable_in_path(char_u *name)
{
char_u *buf;
char_u *path, *e;
int retval;
/* If it's an absolute or relative path don't need to use $PATH. */
if (mch_is_absolute_path(name) ||
(name[0] == '.' && (name[1] == '/' ||
(name[1] == '.' && name[2] == '/')))) {
return is_executable(name);
}
path = (char_u *)getenv("PATH");
char_u *path = (char_u *)getenv("PATH");
/* PATH environment variable does not exist or is empty. */
if (path == NULL || *path == NUL) {
return -1;
}
int buf_len = STRLEN(name) + STRLEN(path) + 2;
buf = alloc((unsigned)(buf_len));
char_u *buf = alloc((unsigned)(buf_len));
if (buf == NULL) {
return -1;
}
@ -246,32 +231,46 @@ int mch_can_exe(char_u *name)
* is an executable file.
*/
for (;; ) {
e = (char_u *)strchr((char *)path, ':');
char_u *e = (char_u *)strchr((char *)path, ':');
if (e == NULL) {
e = path + STRLEN(path);
}
if (e - path <= 1) { /* empty entry means current dir */
STRCPY(buf, "./");
} else {
vim_strncpy(buf, path, e - path);
add_pathsep(buf);
}
/* Glue together the given directory from $PATH with name and save into
* buf. */
vim_strncpy(buf, path, e - path);
append_path((char *) buf, (char *) name, buf_len);
retval = is_executable(buf);
if (retval == OK) {
break;
if (is_executable(buf)) {
/* Found our executable. Free buf and return. */
vim_free(buf);
return OK;
}
if (*e != ':') {
break;
/* End of $PATH without without finding any executable called name. */
vim_free(buf);
return FALSE;
}
path = e + 1;
}
vim_free(buf);
return retval;
return FALSE;
}
/*
* Return 1 if "name" can be found in $PATH and executed, 0 if not.
* Return -1 if unknown.
*/
int mch_can_exe(char_u *name)
{
/* If it's an absolute or relative path don't need to use $PATH. */
if (mch_is_absolute_path(name) ||
(name[0] == '.' && (name[1] == '/' ||
(name[1] == '.' && name[2] == '/')))) {
return is_executable(name);
}
return is_executable_in_path(name);
}