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Merge pull request #44 from larsewi/bogus
General improvements and refactoring
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| #include "files.h" | ||
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| #include <assert.h> | ||
| #include <errno.h> | ||
| #include <libgen.h> | ||
| #include <stdarg.h> | ||
| #include <string.h> | ||
| #include <sys/stat.h> | ||
| #include <unistd.h> | ||
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| #include "definitions.h" | ||
| #include "list.h" | ||
| #include "logger.h" | ||
| #include "string_lib.h" | ||
|
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| /******************************************************************************/ | ||
|
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| bool LCH_FileSize(FILE *file, size_t *size) { | ||
| if (fseek(file, 0, SEEK_END) != 0) { | ||
| LCH_LOG_ERROR("Failed to seek to end of file: %s", strerror(errno)); | ||
| return false; | ||
| } | ||
|
|
||
| long pos = ftell(file); | ||
| if (pos < 0) { | ||
| LCH_LOG_ERROR("Failed to obtain the current file position indicator: %s", | ||
| strerror(errno)); | ||
| return false; | ||
| } | ||
| *size = (size_t)pos; | ||
|
|
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| if (fseek(file, 0, SEEK_SET) != 0) { | ||
| LCH_LOG_ERROR("Failed to seek to start of file: %s", strerror(errno)); | ||
| return false; | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
|
|
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| /******************************************************************************/ | ||
|
|
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| bool LCH_FileExists(const char *const path) { | ||
| struct stat sb; | ||
| memset(&sb, 0, sizeof(struct stat)); | ||
| return stat(path, &sb) == 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
|
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| bool LCH_FileIsRegular(const char *const path) { | ||
| struct stat sb; | ||
| memset(&sb, 0, sizeof(struct stat)); | ||
| return (stat(path, &sb) == 0) && ((sb.st_mode & S_IFMT) == S_IFREG); | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
|
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| bool LCH_FileIsDirectory(const char *const path) { | ||
| struct stat sb; | ||
| memset(&sb, 0, sizeof(struct stat)); | ||
| return (stat(path, &sb) == 0) && ((sb.st_mode & S_IFMT) == S_IFDIR); | ||
| } | ||
|
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||
| /******************************************************************************/ | ||
|
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| bool LCH_FilePathJoin(char *path, const size_t path_max, const size_t n_items, | ||
| ...) { | ||
| assert(path_max >= 1); | ||
|
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| va_list ap; | ||
| va_start(ap, n_items); | ||
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| size_t used = 0; | ||
| bool truncated = false; | ||
| for (size_t i = 0; i < n_items; i++) { | ||
| if (i > 0) { | ||
| if (path_max - used < 2) { | ||
| truncated = true; | ||
| break; | ||
| } | ||
| path[used++] = LCH_PATH_SEP; | ||
| } | ||
|
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| char *const sub = va_arg(ap, char *); | ||
| const size_t sub_len = strlen(sub); | ||
| for (size_t j = 0; j < sub_len; j++) { | ||
| if (path_max - used < 2) { | ||
| truncated = true; | ||
| break; | ||
| } | ||
| path[used++] = sub[j]; | ||
| } | ||
| } | ||
|
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| va_end(ap); | ||
| path[used] = '\0'; | ||
|
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| if (truncated) { | ||
| LCH_LOG_ERROR("Failed to join paths: Truncation error."); | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
|
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| bool LCH_FileDelete(const char *const filename) { | ||
| if (unlink(filename) != 0) { | ||
| LCH_LOG_ERROR("Failed to delete file '%s': %s", filename, strerror(errno)); | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
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| bool LCH_FileCreateParentDirectories(const char *const filename) { | ||
| assert(filename != NULL); | ||
|
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| char fcopy[strlen(filename) + 1]; | ||
| strcpy(fcopy, filename); | ||
| char *parent = dirname(fcopy); | ||
|
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| LCH_List *const dirs = LCH_ListCreate(); | ||
| struct stat sb; | ||
|
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| while (stat(parent, &sb) == -1) { | ||
| char *const dir = LCH_StringDuplicate(parent); | ||
| if (dir == NULL) { | ||
| LCH_ListDestroy(dirs); | ||
| return false; | ||
| } | ||
|
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| if (!LCH_ListAppend(dirs, dir, free)) { | ||
| free(dir); | ||
| LCH_ListDestroy(dirs); | ||
| return false; | ||
| } | ||
|
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| parent = dirname(parent); | ||
| } | ||
|
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| const size_t num_dirs = LCH_ListLength(dirs); | ||
| for (size_t i = num_dirs; i > 0; i--) { | ||
| char *const dir = (char *)LCH_ListGet(dirs, i - 1); | ||
| if (mkdir(dir, (mode_t)0700) == -1) { | ||
| LCH_LOG_ERROR("Failed to create parent directory '%s' for file '%s': %s", | ||
| dir, filename, strerror(errno)); | ||
| LCH_ListDestroy(dirs); | ||
| return false; | ||
| } | ||
| LCH_LOG_VERBOSE("Created directory '%s' with mode %o", dir, (mode_t)0700); | ||
| } | ||
| LCH_ListDestroy(dirs); | ||
| return true; | ||
| } |
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