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added macro RESULT_ERROR_FMT and some filesystem functions

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This commit is contained in:
Timerix 2025-08-04 16:03:08 +03:00
parent 961d00fdb0
commit 6d959fe8f5
4 changed files with 28 additions and 3 deletions
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1
include/tlibc/errors.h
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@ -41,6 +41,7 @@ typedef struct Result_ {
#define RESULT_ERROR(MSG, IS_MSG_ON_HEAP) (Result_){ .error = Error_create(MSG, IS_MSG_ON_HEAP, ErrorCallPos_here()) } #define RESULT_ERROR(MSG, IS_MSG_ON_HEAP) (Result_){ .error = Error_create(MSG, IS_MSG_ON_HEAP, ErrorCallPos_here()) }
#define RESULT_ERROR_FMT(FORMAT, ARGS...) RESULT_ERROR(sprintf_malloc(4096, FORMAT, ARGS), true)
#define RESULT_VOID (Result_){ .error = NULL } #define RESULT_VOID (Result_){ .error = NULL }
#define RESULT_VALUE(FIELD, V) (Result_){ .error = NULL, .FIELD = V } #define RESULT_VALUE(FIELD, V) (Result_){ .error = NULL, .FIELD = V }

9
include/tlibc/filesystem.h
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@ -47,6 +47,15 @@ Result(FILE*) file_open(cstr file_name, cstr fopen_mode);
bool file_exists(cstr path); bool file_exists(cstr path);
Result(i64) file_getSize(FILE* f);
typedef enum SeekOrigin {
SeekOrigin_Start = SEEK_SET,
SeekOrigin_Current = SEEK_CUR,
SeekOrigin_End = SEEK_END,
} SeekOrigin;
Result(void) file_seek(FILE* f, i64 offset, SeekOrigin origin);
bool dir_exists(cstr path); bool dir_exists(cstr path);

2
src/filesystem/dir.c
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@ -35,7 +35,7 @@ Result(void) dir_create(cstr path){
if(mkdir(path, 0777) == -1) if(mkdir(path, 0777) == -1)
#endif #endif
{ {
return RESULT_ERROR(sprintf_malloc(512, "can't create dicectory '%s'", path), true); return RESULT_ERROR_FMT("Can't create dicectory '%s': %s", path, strerror(errno));
} }
return RESULT_VOID; return RESULT_VOID;

19
src/filesystem/file.c
View File

@ -26,9 +26,24 @@ bool file_exists(cstr path){
Result(FILE*) file_open(cstr file_name, cstr fopen_mode){ Result(FILE*) file_open(cstr file_name, cstr fopen_mode){
FILE* f = fopen(file_name, fopen_mode); FILE* f = fopen(file_name, fopen_mode);
if(f == NULL){ if(f == NULL){
char* errmsg = sprintf_malloc(256, "can't open (%s) file '%s': %s", return RESULT_ERROR_FMT("Can't open (%s) file '%s': %s",
fopen_mode, file_name, strerror(errno)); fopen_mode, file_name, strerror(errno));
return RESULT_ERROR(errmsg, true);
} }
return RESULT_VALUE(p, f); return RESULT_VALUE(p, f);
} }
Result(i64) file_getSize(FILE* f){
i64 r = IFWIN(_ftelli64, ftello64)(f);
if(r < 0){
return RESULT_ERROR(strerror(errno), false);
}
return RESULT_VALUE(i, r);
}
Result(void) file_seek(FILE* f, i64 offset, SeekOrigin origin){
if(IFWIN(_fseeki64, fseeko64)(f, offset, (int)origin) != 0){
return RESULT_ERROR_FMT(
"Can't seek (offset: " IFWIN("%lli", "%li") ", origin: %i) in file: %s",
offset, origin, strerror(errno));
}
}