diff options
| -rw-r--r-- | chat.h | 6 | ||||
| -rw-r--r-- | xdg.c | 184 |
2 files changed, 94 insertions, 96 deletions
@@ -294,6 +294,12 @@ void logFormat(uint id, const time_t *time, const char *format, ...) __attribute__((format(printf, 3, 4))); void logClose(void); +const char *configPath( + char *buf, size_t cap, const char **dirs, const char *path +); +const char *dataPath( + char *buf, size_t cap, const char **dirs, const char *path +); FILE *configOpen(const char *path, const char *mode); FILE *dataOpen(const char *path, const char *mode); void dataMkdir(const char *path); @@ -37,121 +37,113 @@ #define SUBDIR "catgirl" -FILE *configOpen(const char *path, const char *mode) { - if (path[0] == '/' || path[0] == '.') goto local; +struct Base { + const char *envHome; + const char *envDirs; + const char *defHome; + const char *defDirs; +}; + +static const struct Base Config = { + .envHome = "XDG_CONFIG_HOME", + .envDirs = "XDG_CONFIG_DIRS", + .defHome = ".config", + .defDirs = "/etc/xdg", +}; + +static const struct Base Data = { + .envHome = "XDG_DATA_HOME", + .envDirs = "XDG_DATA_DIRS", + .defHome = ".local/share", + .defDirs = "/usr/local/share:/usr/share", +}; + +static const char *basePath( + struct Base base, + char *buf, size_t cap, const char **dirs, const char *path +) { + if (*dirs) { + if (!**dirs) return NULL; + size_t len = strcspn(*dirs, ":"); + snprintf(buf, cap, "%.*s/" SUBDIR "/%s", (int)len, *dirs, path); + *dirs += len; + if (**dirs) *dirs += 1; + return buf; + } - const char *home = getenv("HOME"); - const char *configHome = getenv("XDG_CONFIG_HOME"); - const char *configDirs = getenv("XDG_CONFIG_DIRS"); + if (path[0] == '/' || path[0] == '.') { + *dirs = ""; + return path; + } - char buf[PATH_MAX]; - if (configHome) { - snprintf(buf, sizeof(buf), "%s/" SUBDIR "/%s", configHome, path); + *dirs = getenv(base.envDirs); + if (!*dirs) *dirs = base.defDirs; + + const char *home = getenv("HOME"); + const char *baseHome = getenv(base.envHome); + if (baseHome) { + snprintf(buf, cap, "%s/" SUBDIR "/%s", baseHome, path); } else { - if (!home) goto local; - snprintf(buf, sizeof(buf), "%s/.config/" SUBDIR "/%s", home, path); + if (!home) return NULL; + snprintf(buf, cap, "%s/%s/" SUBDIR "/%s", home, base.defHome, path); } - FILE *file = fopen(buf, mode); - if (file) return file; - if (errno != ENOENT) warn("%s", buf); - - if (!configDirs) configDirs = "/etc/xdg"; - while (*configDirs) { - size_t len = strcspn(configDirs, ":"); - snprintf( - buf, sizeof(buf), "%.*s/" SUBDIR "/%s", - (int)len, configDirs, path - ); - file = fopen(buf, mode); + return buf; +} + +const char * +configPath(char *buf, size_t cap, const char **dirs, const char *path) { + return basePath(Config, buf, cap, dirs, path); +} + +const char * +dataPath(char *buf, size_t cap, const char **dirs, const char *path) { + return basePath(Data, buf, cap, dirs, path); +} + +FILE *configOpen(const char *path, const char *mode) { + const char *abs; + char buf[PATH_MAX]; + const char *dirs = NULL; + while (NULL != (abs = configPath(buf, sizeof(buf), &dirs, path))) { + FILE *file = fopen(abs, mode); if (file) return file; - if (errno != ENOENT) warn("%s", buf); - configDirs += len; - if (*configDirs) configDirs++; + if (errno != ENOENT) warn("%s", abs); } - -local: - file = fopen(path, mode); + FILE *file = fopen(path, mode); if (!file) warn("%s", path); return file; } -FILE *dataOpen(const char *path, const char *mode) { - if (path[0] == '/' || path[0] == '.') goto local; - - const char *home = getenv("HOME"); - const char *dataHome = getenv("XDG_DATA_HOME"); - const char *dataDirs = getenv("XDG_DATA_DIRS"); - - char homePath[PATH_MAX]; - if (dataHome) { - snprintf( - homePath, sizeof(homePath), - "%s/" SUBDIR "/%s", dataHome, path - ); - } else { - if (!home) goto local; - snprintf( - homePath, sizeof(homePath), - "%s/.local/share/" SUBDIR "/%s", home, path - ); - } - FILE *file = fopen(homePath, mode); - if (file) return file; - if (errno != ENOENT) warn("%s", homePath); +void dataMkdir(const char *path) { + char buf[PATH_MAX]; + const char *dirs = NULL; + const char *abs = dataPath(buf, sizeof(buf), &dirs, path); + int error = mkdir(abs, S_IRWXU); + if (error && errno != EEXIST) warn("%s", abs); +} +FILE *dataOpen(const char *path, const char *mode) { + const char *abs; char buf[PATH_MAX]; - if (!dataDirs) dataDirs = "/usr/local/share:/usr/share"; - while (*dataDirs) { - size_t len = strcspn(dataDirs, ":"); - snprintf( - buf, sizeof(buf), "%.*s/" SUBDIR "/%s", - (int)len, dataDirs, path - ); - file = fopen(buf, mode); + const char *dirs = NULL; + while (NULL != (abs = dataPath(buf, sizeof(buf), &dirs, path))) { + FILE *file = fopen(abs, mode); if (file) return file; - if (errno != ENOENT) warn("%s", buf); - dataDirs += len; - if (*dataDirs) dataDirs++; + if (errno != ENOENT) warn("%s", abs); } if (mode[0] != 'r') { - char *base = strrchr(homePath, '/'); - *base = '\0'; - int error = mkdir(homePath, S_IRWXU); - if (error && errno != EEXIST) { - warn("%s", homePath); - return NULL; - } - *base = '/'; - file = fopen(homePath, mode); - if (!file) warn("%s", homePath); + dirs = NULL; + abs = dataPath(buf, sizeof(buf), &dirs, path); + if (!abs) return NULL; + + dataMkdir(""); + FILE *file = fopen(abs, mode); + if (!file) warn("%s", abs); return file; } -local: - file = fopen(path, mode); + FILE *file = fopen(path, mode); if (!file) warn("%s", path); return file; } - -void dataMkdir(const char *path) { - const char *home = getenv("HOME"); - const char *dataHome = getenv("XDG_DATA_HOME"); - - char homePath[PATH_MAX]; - if (dataHome) { - snprintf( - homePath, sizeof(homePath), - "%s/" SUBDIR "/%s", dataHome, path - ); - } else { - if (!home) return; - snprintf( - homePath, sizeof(homePath), - "%s/.local/share/" SUBDIR "/%s", home, path - ); - } - - int error = mkdir(homePath, S_IRWXU); - if (error && errno != EEXIST) warn("%s", homePath); -} |