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-rw-r--r--src/DatabaseSave.cxx15
-rw-r--r--src/DatabaseSave.hxx3
-rw-r--r--src/DirectorySave.cxx27
-rw-r--r--src/DirectorySave.hxx4
-rw-r--r--src/PlaylistDatabase.cxx6
-rw-r--r--src/PlaylistDatabase.hxx5
-rw-r--r--src/PlaylistFile.cxx9
-rw-r--r--src/PlaylistState.cxx14
-rw-r--r--src/PlaylistState.hxx3
-rw-r--r--src/QueueSave.cxx7
-rw-r--r--src/QueueSave.hxx4
-rw-r--r--src/SongSave.cxx6
-rw-r--r--src/SongSave.hxx5
-rw-r--r--src/StateFile.cxx16
-rw-r--r--src/TextFile.cxx11
-rw-r--r--src/TextFile.hxx49
-rw-r--r--src/db/SimpleDatabasePlugin.cxx11
17 files changed, 97 insertions, 98 deletions
diff --git a/src/DatabaseSave.cxx b/src/DatabaseSave.cxx
index 5bd50f55..78a2c493 100644
--- a/src/DatabaseSave.cxx
+++ b/src/DatabaseSave.cxx
@@ -77,9 +77,8 @@ db_save_internal(FILE *fp, const Directory *music_root)
}
bool
-db_load_internal(FILE *fp, Directory *music_root, GError **error)
+db_load_internal(TextFile &file, Directory *music_root, GError **error)
{
- GString *buffer = g_string_sized_new(1024);
char *line;
int format = 0;
bool found_charset = false, found_version = false;
@@ -89,16 +88,15 @@ db_load_internal(FILE *fp, Directory *music_root, GError **error)
assert(music_root != NULL);
/* get initial info */
- line = read_text_line(fp, buffer);
+ line = file.ReadLine();
if (line == NULL || strcmp(DIRECTORY_INFO_BEGIN, line) != 0) {
g_set_error(error, db_quark(), 0, "Database corrupted");
- g_string_free(buffer, true);
return false;
}
memset(tags, false, sizeof(tags));
- while ((line = read_text_line(fp, buffer)) != NULL &&
+ while ((line = file.ReadLine()) != NULL &&
strcmp(line, DIRECTORY_INFO_END) != 0) {
if (g_str_has_prefix(line, DB_FORMAT_PREFIX)) {
format = atoi(line + sizeof(DB_FORMAT_PREFIX) - 1);
@@ -106,7 +104,6 @@ db_load_internal(FILE *fp, Directory *music_root, GError **error)
if (found_version) {
g_set_error(error, db_quark(), 0,
"Duplicate version line");
- g_string_free(buffer, true);
return false;
}
@@ -117,7 +114,6 @@ db_load_internal(FILE *fp, Directory *music_root, GError **error)
if (found_charset) {
g_set_error(error, db_quark(), 0,
"Duplicate charset line");
- g_string_free(buffer, true);
return false;
}
@@ -132,7 +128,6 @@ db_load_internal(FILE *fp, Directory *music_root, GError **error)
"\"%s\" instead of \"%s\"; "
"discarding database file",
new_charset, old_charset);
- g_string_free(buffer, true);
return false;
}
} else if (g_str_has_prefix(line, DB_TAG_PREFIX)) {
@@ -150,7 +145,6 @@ db_load_internal(FILE *fp, Directory *music_root, GError **error)
} else {
g_set_error(error, db_quark(), 0,
"Malformed line: %s", line);
- g_string_free(buffer, true);
return false;
}
}
@@ -174,9 +168,8 @@ db_load_internal(FILE *fp, Directory *music_root, GError **error)
g_debug("reading DB");
db_lock();
- success = directory_load(fp, music_root, buffer, error);
+ success = directory_load(file, music_root, error);
db_unlock();
- g_string_free(buffer, true);
return success;
}
diff --git a/src/DatabaseSave.hxx b/src/DatabaseSave.hxx
index 5133961f..40048f26 100644
--- a/src/DatabaseSave.hxx
+++ b/src/DatabaseSave.hxx
@@ -25,11 +25,12 @@
#include <stdio.h>
struct Directory;
+class TextFile;
void
db_save_internal(FILE *file, const Directory *root);
bool
-db_load_internal(FILE *file, Directory *root, GError **error);
+db_load_internal(TextFile &file, Directory *root, GError **error);
#endif
diff --git a/src/DirectorySave.cxx b/src/DirectorySave.cxx
index 9c5df685..6a5efb05 100644
--- a/src/DirectorySave.cxx
+++ b/src/DirectorySave.cxx
@@ -76,10 +76,9 @@ directory_save(FILE *fp, const Directory *directory)
}
static Directory *
-directory_load_subdir(FILE *fp, Directory *parent, const char *name,
- GString *buffer, GError **error_r)
+directory_load_subdir(TextFile &file, Directory *parent, const char *name,
+ GError **error_r)
{
- const char *line;
bool success;
if (parent->FindChild(name) != nullptr) {
@@ -90,7 +89,7 @@ directory_load_subdir(FILE *fp, Directory *parent, const char *name,
Directory *directory = parent->CreateChild(name);
- line = read_text_line(fp, buffer);
+ const char *line = file.ReadLine();
if (line == NULL) {
g_set_error(error_r, directory_quark(), 0,
"Unexpected end of file");
@@ -103,7 +102,7 @@ directory_load_subdir(FILE *fp, Directory *parent, const char *name,
g_ascii_strtoull(line + sizeof(DIRECTORY_MTIME) - 1,
NULL, 10);
- line = read_text_line(fp, buffer);
+ line = file.ReadLine();
if (line == NULL) {
g_set_error(error_r, directory_quark(), 0,
"Unexpected end of file");
@@ -119,7 +118,7 @@ directory_load_subdir(FILE *fp, Directory *parent, const char *name,
return NULL;
}
- success = directory_load(fp, directory, buffer, error_r);
+ success = directory_load(file, directory, error_r);
if (!success) {
directory->Delete();
return NULL;
@@ -129,18 +128,17 @@ directory_load_subdir(FILE *fp, Directory *parent, const char *name,
}
bool
-directory_load(FILE *fp, Directory *directory,
- GString *buffer, GError **error)
+directory_load(TextFile &file, Directory *directory, GError **error)
{
const char *line;
- while ((line = read_text_line(fp, buffer)) != NULL &&
+ while ((line = file.ReadLine()) != NULL &&
!g_str_has_prefix(line, DIRECTORY_END)) {
if (g_str_has_prefix(line, DIRECTORY_DIR)) {
Directory *subdir =
- directory_load_subdir(fp, directory,
+ directory_load_subdir(file, directory,
line + sizeof(DIRECTORY_DIR) - 1,
- buffer, error);
+ error);
if (subdir == NULL)
return false;
} else if (g_str_has_prefix(line, SONG_BEGIN)) {
@@ -153,8 +151,7 @@ directory_load(FILE *fp, Directory *directory,
return false;
}
- song = song_load(fp, directory, name,
- buffer, error);
+ song = song_load(file, directory, name, error);
if (song == NULL)
return false;
@@ -165,8 +162,8 @@ directory_load(FILE *fp, Directory *directory,
buffer */
char *name = g_strdup(line + sizeof(PLAYLIST_META_BEGIN) - 1);
- if (!playlist_metadata_load(fp, directory->playlists,
- name, buffer, error)) {
+ if (!playlist_metadata_load(file, directory->playlists,
+ name, error)) {
g_free(name);
return false;
}
diff --git a/src/DirectorySave.hxx b/src/DirectorySave.hxx
index 83b82061..a7f3034a 100644
--- a/src/DirectorySave.hxx
+++ b/src/DirectorySave.hxx
@@ -25,12 +25,12 @@
#include <stdio.h>
struct Directory;
+class TextFile;
void
directory_save(FILE *fp, const Directory *directory);
bool
-directory_load(FILE *fp, Directory *directory,
- GString *buffer, GError **error);
+directory_load(TextFile &file, Directory *directory, GError **error);
#endif
diff --git a/src/PlaylistDatabase.cxx b/src/PlaylistDatabase.cxx
index 984af4ad..edc6a281 100644
--- a/src/PlaylistDatabase.cxx
+++ b/src/PlaylistDatabase.cxx
@@ -46,15 +46,15 @@ playlist_vector_save(FILE *fp, const PlaylistVector &pv)
}
bool
-playlist_metadata_load(FILE *fp, PlaylistVector &pv, const char *name,
- GString *buffer, GError **error_r)
+playlist_metadata_load(TextFile &file, PlaylistVector &pv, const char *name,
+ GError **error_r)
{
PlaylistInfo pm(name, 0);
char *line, *colon;
const char *value;
- while ((line = read_text_line(fp, buffer)) != NULL &&
+ while ((line = file.ReadLine()) != NULL &&
strcmp(line, "playlist_end") != 0) {
colon = strchr(line, ':');
if (colon == NULL || colon == line) {
diff --git a/src/PlaylistDatabase.hxx b/src/PlaylistDatabase.hxx
index da2bb6b9..f5f03926 100644
--- a/src/PlaylistDatabase.hxx
+++ b/src/PlaylistDatabase.hxx
@@ -28,12 +28,13 @@
#define PLAYLIST_META_BEGIN "playlist_begin: "
class PlaylistVector;
+class TextFile;
void
playlist_vector_save(FILE *fp, const PlaylistVector &pv);
bool
-playlist_metadata_load(FILE *fp, PlaylistVector &pv, const char *name,
- GString *buffer, GError **error_r);
+playlist_metadata_load(TextFile &file, PlaylistVector &pv, const char *name,
+ GError **error_r);
#endif
diff --git a/src/PlaylistFile.cxx b/src/PlaylistFile.cxx
index e03cc5e5..67ffdff4 100644
--- a/src/PlaylistFile.cxx
+++ b/src/PlaylistFile.cxx
@@ -236,16 +236,14 @@ LoadPlaylistFile(const char *utf8path, GError **error_r)
if (path_fs == NULL)
return contents;
- FILE *file = fopen(path_fs, "r");
- g_free(path_fs);
- if (file == NULL) {
+ TextFile file(path_fs);
+ if (file.HasFailed()) {
playlist_errno(error_r);
return contents;
}
- GString *buffer = g_string_sized_new(1024);
char *s;
- while ((s = read_text_line(file, buffer)) != NULL) {
+ while ((s = file.ReadLine()) != NULL) {
if (*s == 0 || *s == PLAYLIST_COMMENT)
continue;
@@ -265,7 +263,6 @@ LoadPlaylistFile(const char *utf8path, GError **error_r)
break;
}
- fclose(file);
return contents;
}
diff --git a/src/PlaylistState.cxx b/src/PlaylistState.cxx
index c45c2a83..1bb18250 100644
--- a/src/PlaylistState.cxx
+++ b/src/PlaylistState.cxx
@@ -104,18 +104,18 @@ playlist_state_save(FILE *fp, const struct playlist *playlist,
}
static void
-playlist_state_load(FILE *fp, GString *buffer, struct playlist *playlist)
+playlist_state_load(TextFile &file, struct playlist *playlist)
{
- const char *line = read_text_line(fp, buffer);
+ const char *line = file.ReadLine();
if (line == NULL) {
g_warning("No playlist in state file");
return;
}
while (!g_str_has_prefix(line, PLAYLIST_STATE_FILE_PLAYLIST_END)) {
- queue_load_song(fp, buffer, line, &playlist->queue);
+ queue_load_song(file, line, &playlist->queue);
- line = read_text_line(fp, buffer);
+ line = file.ReadLine();
if (line == NULL) {
g_warning("'" PLAYLIST_STATE_FILE_PLAYLIST_END
"' not found in state file");
@@ -127,7 +127,7 @@ playlist_state_load(FILE *fp, GString *buffer, struct playlist *playlist)
}
bool
-playlist_state_restore(const char *line, FILE *fp, GString *buffer,
+playlist_state_restore(const char *line, TextFile &file,
struct playlist *playlist, struct player_control *pc)
{
int current = -1;
@@ -145,7 +145,7 @@ playlist_state_restore(const char *line, FILE *fp, GString *buffer,
else if (strcmp(line, PLAYLIST_STATE_FILE_STATE_PAUSE) == 0)
state = PLAYER_STATE_PAUSE;
- while ((line = read_text_line(fp, buffer)) != NULL) {
+ while ((line = file.ReadLine()) != NULL) {
if (g_str_has_prefix(line, PLAYLIST_STATE_FILE_TIME)) {
seek_time =
atoi(&(line[strlen(PLAYLIST_STATE_FILE_TIME)]));
@@ -189,7 +189,7 @@ playlist_state_restore(const char *line, FILE *fp, GString *buffer,
(PLAYLIST_STATE_FILE_CURRENT)]));
} else if (g_str_has_prefix(line,
PLAYLIST_STATE_FILE_PLAYLIST_BEGIN)) {
- playlist_state_load(fp, buffer, playlist);
+ playlist_state_load(file, playlist);
}
}
diff --git a/src/PlaylistState.hxx b/src/PlaylistState.hxx
index d38fe9d1..572f6fb4 100644
--- a/src/PlaylistState.hxx
+++ b/src/PlaylistState.hxx
@@ -30,13 +30,14 @@
struct playlist;
struct player_control;
+class TextFile;
void
playlist_state_save(FILE *fp, const struct playlist *playlist,
struct player_control *pc);
bool
-playlist_state_restore(const char *line, FILE *fp, GString *buffer,
+playlist_state_restore(const char *line, TextFile &file,
struct playlist *playlist, struct player_control *pc);
/**
diff --git a/src/QueueSave.cxx b/src/QueueSave.cxx
index a468013f..6ba48f33 100644
--- a/src/QueueSave.cxx
+++ b/src/QueueSave.cxx
@@ -71,8 +71,7 @@ queue_save(FILE *fp, const struct queue *queue)
}
void
-queue_load_song(FILE *fp, GString *buffer, const char *line,
- struct queue *queue)
+queue_load_song(TextFile &file, const char *line, queue *queue)
{
if (queue_is_full(queue))
return;
@@ -81,7 +80,7 @@ queue_load_song(FILE *fp, GString *buffer, const char *line,
if (g_str_has_prefix(line, PRIO_LABEL)) {
priority = strtoul(line + sizeof(PRIO_LABEL) - 1, NULL, 10);
- line = read_text_line(fp, buffer);
+ line = file.ReadLine();
if (line == NULL)
return;
}
@@ -95,7 +94,7 @@ queue_load_song(FILE *fp, GString *buffer, const char *line,
return;
GError *error = NULL;
- song = song_load(fp, NULL, uri, buffer, &error);
+ song = song_load(file, NULL, uri, &error);
if (song == NULL) {
g_warning("%s", error->message);
g_error_free(error);
diff --git a/src/QueueSave.hxx b/src/QueueSave.hxx
index d6b09329..dc4a764a 100644
--- a/src/QueueSave.hxx
+++ b/src/QueueSave.hxx
@@ -29,6 +29,7 @@
#include <stdio.h>
struct queue;
+class TextFile;
void
queue_save(FILE *fp, const struct queue *queue);
@@ -37,7 +38,6 @@ queue_save(FILE *fp, const struct queue *queue);
* Loads one song from the state file and appends it to the queue.
*/
void
-queue_load_song(FILE *fp, GString *buffer, const char *line,
- struct queue *queue);
+queue_load_song(TextFile &file, const char *line, queue *queue);
#endif
diff --git a/src/SongSave.cxx b/src/SongSave.cxx
index cbc2536b..a32b7fec 100644
--- a/src/SongSave.cxx
+++ b/src/SongSave.cxx
@@ -63,8 +63,8 @@ song_save(FILE *fp, const struct song *song)
}
struct song *
-song_load(FILE *fp, Directory *parent, const char *uri,
- GString *buffer, GError **error_r)
+song_load(TextFile &file, Directory *parent, const char *uri,
+ GError **error_r)
{
struct song *song = parent != NULL
? song_file_new(uri, parent)
@@ -73,7 +73,7 @@ song_load(FILE *fp, Directory *parent, const char *uri,
enum tag_type type;
const char *value;
- while ((line = read_text_line(fp, buffer)) != NULL &&
+ while ((line = file.ReadLine()) != NULL &&
strcmp(line, SONG_END) != 0) {
colon = strchr(line, ':');
if (colon == NULL || colon == line) {
diff --git a/src/SongSave.hxx b/src/SongSave.hxx
index 81838a3e..3214c545 100644
--- a/src/SongSave.hxx
+++ b/src/SongSave.hxx
@@ -28,6 +28,7 @@
struct song;
struct Directory;
+class TextFile;
void
song_save(FILE *fp, const struct song *song);
@@ -41,7 +42,7 @@ song_save(FILE *fp, const struct song *song);
* @return true on success, false on error
*/
struct song *
-song_load(FILE *fp, Directory *parent, const char *uri,
- GString *buffer, GError **error_r);
+song_load(TextFile &file, Directory *parent, const char *uri,
+ GError **error_r);
#endif
diff --git a/src/StateFile.cxx b/src/StateFile.cxx
index 5af60ddb..cd344eb0 100644
--- a/src/StateFile.cxx
+++ b/src/StateFile.cxx
@@ -78,39 +78,31 @@ state_file_write(struct player_control *pc)
static void
state_file_read(struct player_control *pc)
{
- FILE *fp;
bool success;
assert(state_file_path != NULL);
g_debug("Loading state file %s", state_file_path);
- fp = fopen(state_file_path, "r");
- if (G_UNLIKELY(!fp)) {
+ TextFile file(state_file_path);
+ if (file.HasFailed()) {
g_warning("failed to open %s: %s",
state_file_path, g_strerror(errno));
return;
}
- GString *buffer = g_string_sized_new(1024);
const char *line;
- while ((line = read_text_line(fp, buffer)) != NULL) {
+ while ((line = file.ReadLine()) != NULL) {
success = read_sw_volume_state(line) ||
audio_output_state_read(line) ||
- playlist_state_restore(line, fp, buffer,
- &g_playlist, pc);
+ playlist_state_restore(line, file, &g_playlist, pc);
if (!success)
g_warning("Unrecognized line in state file: %s", line);
}
- fclose(fp);
-
prev_volume_version = sw_volume_state_get_hash();
prev_output_version = audio_output_state_get_version();
prev_playlist_version = playlist_state_get_hash(&g_playlist, pc);
-
-
- g_string_free(buffer, true);
}
/**
diff --git a/src/TextFile.cxx b/src/TextFile.cxx
index ec9c5d44..4ad59ee4 100644
--- a/src/TextFile.cxx
+++ b/src/TextFile.cxx
@@ -24,21 +24,14 @@
#include <string.h>
char *
-read_text_line(FILE *file, GString *buffer)
+TextFile::ReadLine()
{
- enum {
- max_length = 512 * 1024,
- step = 1024,
- };
-
gsize length = 0, i;
char *p;
assert(file != NULL);
assert(buffer != NULL);
-
- if (buffer->allocated_len < step)
- g_string_set_size(buffer, step);
+ assert(buffer->allocated_len >= step);
while (buffer->len < max_length) {
p = fgets(buffer->str + length,
diff --git a/src/TextFile.hxx b/src/TextFile.hxx
index 5bd6dbd3..25f6ea7a 100644
--- a/src/TextFile.hxx
+++ b/src/TextFile.hxx
@@ -20,20 +20,47 @@
#ifndef MPD_TEXT_FILE_HXX
#define MPD_TEXT_FILE_HXX
+#include "gcc.h"
+
#include <glib.h>
#include <stdio.h>
-/**
- * Reads a line from the input file, and strips trailing space. There
- * is a reasonable maximum line length, only to prevent denial of
- * service.
- *
- * @param file the source file, opened in text mode
- * @param buffer an allocator for the buffer
- * @return a pointer to the line, or NULL on end-of-file or error
- */
-char *
-read_text_line(FILE *file, GString *buffer);
+class TextFile {
+ static constexpr size_t max_length = 512 * 1024;
+ static constexpr size_t step = 1024;
+
+ FILE *const file;
+
+ GString *const buffer;
+
+public:
+ TextFile(const char *path_fs)
+ :file(fopen(path_fs, "r")), buffer(g_string_sized_new(step)) {}
+
+ TextFile(const TextFile &other) = delete;
+
+ ~TextFile() {
+ if (file != nullptr)
+ fclose(file);
+
+ g_string_free(buffer, true);
+ }
+
+ bool HasFailed() const {
+ return gcc_unlikely(file == nullptr);
+ }
+
+ /**
+ * Reads a line from the input file, and strips trailing
+ * space. There is a reasonable maximum line length, only to
+ * prevent denial of service.
+ *
+ * @param file the source file, opened in text mode
+ * @param buffer an allocator for the buffer
+ * @return a pointer to the line, or NULL on end-of-file or error
+ */
+ char *ReadLine();
+};
#endif
diff --git a/src/db/SimpleDatabasePlugin.cxx b/src/db/SimpleDatabasePlugin.cxx
index 04e31949..84e4e7ce 100644
--- a/src/db/SimpleDatabasePlugin.cxx
+++ b/src/db/SimpleDatabasePlugin.cxx
@@ -26,6 +26,7 @@
#include "DatabaseSave.hxx"
#include "DatabaseLock.hxx"
#include "db_error.h"
+#include "TextFile.hxx"
extern "C" {
#include "conf.h"
@@ -155,20 +156,16 @@ SimpleDatabase::Load(GError **error_r)
assert(!path.empty());
assert(root != NULL);
- FILE *fp = fopen(path.c_str(), "r");
- if (fp == NULL) {
+ TextFile file(path.c_str());
+ if (file.HasFailed()) {
g_set_error(error_r, simple_db_quark(), errno,
"Failed to open database file \"%s\": %s",
path.c_str(), g_strerror(errno));
return false;
}
- if (!db_load_internal(fp, root, error_r)) {
- fclose(fp);
+ if (!db_load_internal(file, root, error_r))
return false;
- }
-
- fclose(fp);
struct stat st;
if (stat(path.c_str(), &st) == 0)
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-20 19:45:03 +0000