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BLI_path: add PATH search utility functions

This commit is contained in:
Campbell Barton 2015-05-06 06:05:31 +10:00
parent c641a5563f
commit e00142bfa7
3 changed files with 116 additions and 79 deletions
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87
source/blender/blenkernel/intern/appdir.c
View File

@ -500,54 +500,6 @@ const char *BKE_appdir_folder_id_version(const int folder_id, const int ver, con
/* -------------------------------------------------------------------- */
/* Preset paths */
/**
* Tries appending each of the semicolon-separated extensions in the PATHEXT
* environment variable (Windows-only) onto *name in turn until such a file is found.
* Returns success/failure.
*/
static int add_win32_extension(char *name)
{
int retval = 0;
int type;
type = BLI_exists(name);
if ((type == 0) || S_ISDIR(type)) {
#ifdef _WIN32
char filename[FILE_MAX];
char ext[FILE_MAX];
const char *extensions = getenv("PATHEXT");
if (extensions) {
char *temp;
do {
strcpy(filename, name);
temp = strstr(extensions, ";");
if (temp) {
strncpy(ext, extensions, temp - extensions);
ext[temp - extensions] = 0;
extensions = temp + 1;
strcat(filename, ext);
}
else {
strcat(filename, extensions);
}
type = BLI_exists(filename);
if (type && (!S_ISDIR(type))) {
retval = 1;
strcpy(name, filename);
break;
}
} while (temp);
}
#endif
}
else {
retval = 1;
}
return (retval);
}
/**
* Checks if name is a fully qualified filename to an executable.
* If not it searches $PATH for the file. On Windows it also
@ -562,16 +514,8 @@ static int add_win32_extension(char *name)
*/
static void bli_where_am_i(char *fullname, const size_t maxlen, const char *name)
{
char filename[FILE_MAX];
const char *path = NULL, *temp;
const char *path = NULL;
#ifdef _WIN32
const char *separator = ";";
#else
const char *separator = ":";
#endif
#ifdef WITH_BINRELOC
/* linux uses binreloc since argv[0] is not reliable, call br_init( NULL ) first */
path = br_find_exe(NULL);
@ -611,34 +555,19 @@ static void bli_where_am_i(char *fullname, const size_t maxlen, const char *name
else
BLI_join_dirfile(fullname, maxlen, wdir, name);
add_win32_extension(fullname); /* XXX, doesnt respect length */
#ifdef _WIN32
BLI_path_binary_extensions_add_win32(fullname, maxlen);
#endif
}
else if (BLI_last_slash(name)) {
// full path
BLI_strncpy(fullname, name, maxlen);
add_win32_extension(fullname);
#ifdef _WIN32
BLI_path_binary_extensions_add_win32(fullname, maxlen);
#endif
}
else {
// search for binary in $PATH
path = getenv("PATH");
if (path) {
do {
temp = strstr(path, separator);
if (temp) {
strncpy(filename, path, temp - path);
filename[temp - path] = 0;
path = temp + 1;
}
else {
strncpy(filename, path, sizeof(filename));
}
BLI_path_append(fullname, maxlen, name);
if (add_win32_extension(filename)) {
BLI_strncpy(fullname, filename, maxlen);
break;
}
} while (temp);
}
BLI_path_binary_search(fullname, maxlen, name);
}
#if defined(DEBUG)
if (!STREQ(name, fullname)) {

5
source/blender/blenlib/BLI_path_util.h
View File

@ -78,6 +78,11 @@ void BLI_del_slash(char *string) ATTR_NONNULL();
const char *BLI_first_slash(const char *string) ATTR_NONNULL() ATTR_WARN_UNUSED_RESULT;
void BLI_path_native_slash(char *path) ATTR_NONNULL();
#ifdef _WIN32
bool BLI_path_binary_extensions_add_win32(char *name, const size_t maxlen);
#endif
bool BLI_path_binary_search(char *fullname, const size_t maxlen, const char *name);
void BLI_getlastdir(const char *dir, char *last, const size_t maxlen);
bool BLI_testextensie(const char *str, const char *ext) ATTR_NONNULL() ATTR_WARN_UNUSED_RESULT;
bool BLI_testextensie_n(const char *str, ...) ATTR_NONNULL(1) ATTR_SENTINEL(0);

103
source/blender/blenlib/intern/path_util.c
View File

@ -1020,6 +1020,109 @@ bool BLI_path_cwd(char *path)
return wasrelative;
}
#ifdef _WIN32
/**
* Tries appending each of the semicolon-separated extensions in the PATHEXT
* environment variable (Windows-only) onto *name in turn until such a file is found.
* Returns success/failure.
*/
bool BLI_path_binary_extensions_add_win32(char *name, const size_t maxlen)
{
bool retval = false;
int type;
type = BLI_exists(name);
if ((type == 0) || S_ISDIR(type)) {
char filename[FILE_MAX];
char ext[FILE_MAX];
const char *extensions = getenv("PATHEXT");
if (extensions) {
const char *temp;
do {
strcpy(filename, name);
temp = strchr(extensions, ';');
if (temp) {
strncpy(ext, extensions, temp - extensions);
ext[temp - extensions] = 0;
extensions = temp + 1;
strcat(filename, ext);
}
else {
strcat(filename, extensions);
}
type = BLI_exists(filename);
if (type && (!S_ISDIR(type))) {
retval = true;
BLI_strncpy(name, filename, maxlen);
break;
}
} while (temp);
}
}
else {
retval = true;
}
return retval;
}
#endif /* WIN32 */
/**
* Search for a binary (executable)
*/
bool BLI_path_binary_search(
char *fullname, const size_t maxlen,
const char *name)
{
const char *path;
bool retval = false;
#ifdef _WIN32
const char separator = ';';
#else
const char separator = ':';
#endif
path = getenv("PATH");
if (path) {
char filename[FILE_MAX];
const char *temp;
do {
temp = strchr(path, separator);
if (temp) {
strncpy(filename, path, temp - path);
filename[temp - path] = 0;
path = temp + 1;
}
else {
strncpy(filename, path, sizeof(filename));
}
BLI_path_append(filename, maxlen, name);
if (
#ifdef _WIN32
BLI_path_binary_extensions_add_win32(filename, maxlen)
#else
BLI_exists(filename)
#endif
)
{
BLI_strncpy(fullname, filename, maxlen);
retval = true;
break;
}
} while (temp);
}
if (retval == false) {
*fullname = '\0';
}
return retval;
}
/**
* Copies into *last the part of *dir following the second-last slash.
*/