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-rw-r--r--src/fs/TextFile.cxx48
-rw-r--r--src/fs/TextFile.hxx5
2 files changed, 29 insertions, 24 deletions
diff --git a/src/fs/TextFile.cxx b/src/fs/TextFile.cxx
index 21bd8ee8f..b1a92b9cc 100644
--- a/src/fs/TextFile.cxx
+++ b/src/fs/TextFile.cxx
@@ -19,59 +19,63 @@
#include "config.h"
#include "TextFile.hxx"
+#include "util/Alloc.hxx"
#include "fs/Path.hxx"
#include "fs/FileSystem.hxx"
-#include <glib.h>
-
#include <assert.h>
#include <string.h>
+#include <stdlib.h>
TextFile::TextFile(Path path_fs)
:file(FOpen(path_fs, FOpenMode::ReadText)),
- buffer(g_string_sized_new(step)) {}
+ buffer((char *)xalloc(step)), capacity(step), length(0) {}
TextFile::~TextFile()
{
+ free(buffer);
+
if (file != nullptr)
fclose(file);
-
- g_string_free(buffer, true);
}
char *
TextFile::ReadLine()
{
- gsize length = 0, i;
- char *p;
-
assert(file != nullptr);
- assert(buffer != nullptr);
- assert(buffer->allocated_len >= step);
- while (buffer->len < max_length) {
- p = fgets(buffer->str + length,
- buffer->allocated_len - length, file);
+ while (true) {
+ if (length >= capacity) {
+ if (capacity >= max_length)
+ /* too large already - bail out */
+ return nullptr;
+
+ capacity <<= 1;
+ char *new_buffer = (char *)realloc(buffer, capacity);
+ if (new_buffer == nullptr)
+ /* out of memory - bail out */
+ return nullptr;
+ }
+
+ char *p = fgets(buffer + length, capacity - length, file);
if (p == nullptr) {
if (length == 0 || ferror(file))
return nullptr;
break;
}
- i = strlen(buffer->str + length);
- length += i;
- if (i < step - 1 || buffer->str[length - 1] == '\n')
+ length += strlen(buffer + length);
+ if (buffer[length - 1] == '\n')
break;
-
- g_string_set_size(buffer, length + step);
}
/* remove the newline characters */
- if (buffer->str[length - 1] == '\n')
+ if (buffer[length - 1] == '\n')
--length;
- if (buffer->str[length - 1] == '\r')
+ if (buffer[length - 1] == '\r')
--length;
- g_string_set_size(buffer, length);
- return buffer->str;
+ buffer[length] = 0;
+ length = 0;
+ return buffer;
}
diff --git a/src/fs/TextFile.hxx b/src/fs/TextFile.hxx
index b4b850c0f..e3a712a88 100644
--- a/src/fs/TextFile.hxx
+++ b/src/fs/TextFile.hxx
@@ -23,9 +23,9 @@
#include "Compiler.h"
#include <stdio.h>
+#include <stddef.h>
class Path;
-typedef struct _GString GString;
class TextFile {
static constexpr size_t max_length = 512 * 1024;
@@ -33,7 +33,8 @@ class TextFile {
FILE *const file;
- GString *const buffer;
+ char *buffer;
+ size_t capacity, length;
public:
TextFile(Path path_fs);