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util/u_file: Add u_file_open_file_in_config_dir_subpath()

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Add a utility function for accessing files in subdirectories
of the main config dir, creating the subpath as needed.
This commit is contained in:
Jan Schmidt 2023-05-27 17:44:34 +10:00 committed by Jakob Bornecrantz
parent 2f3f9e0cb9
commit ac84cd4d52
2 changed files with 36 additions and 0 deletions
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33
src/xrt/auxiliary/util/u_file.c
View file

@ -119,6 +119,39 @@ u_file_open_file_in_config_dir(const char *filename, const char *mode)
return fopen(file_str, mode);
}
FILE *
u_file_open_file_in_config_dir_subpath(const char *subpath, const char *filename, const char *mode)
{
char tmp[PATH_MAX];
int i = u_file_get_config_dir(tmp, sizeof(tmp));
if (i < 0 || i >= (int)sizeof(tmp)) {
return NULL;
}
char fullpath[PATH_MAX];
i = snprintf(fullpath, sizeof(fullpath), "%s/%s", tmp, subpath);
if (i < 0 || i >= (int)sizeof(fullpath)) {
return NULL;
}
char file_str[PATH_MAX + 15];
i = snprintf(file_str, sizeof(file_str), "%s/%s", fullpath, filename);
if (i < 0 || i >= (int)sizeof(file_str)) {
return NULL;
}
FILE *file = fopen(file_str, mode);
if (file != NULL) {
return file;
}
// Try creating the path.
mkpath(fullpath);
// Do not report error.
return fopen(file_str, mode);
}
ssize_t
u_file_get_hand_tracking_models_dir(char *out_path, size_t out_path_size)
{

3
src/xrt/auxiliary/util/u_file.h
View file

@ -28,6 +28,9 @@ u_file_get_path_in_config_dir(const char *suffix, char *out_path, size_t out_pat
FILE *
u_file_open_file_in_config_dir(const char *filename, const char *mode);
FILE *
u_file_open_file_in_config_dir_subpath(const char *subpath, const char *filename, const char *mode);
ssize_t
u_file_get_hand_tracking_models_dir(char *out_path, size_t out_path_size);