cpp/openttd-patchpack/source Changeset - r21880:60e79770a988

Changeset - r21880:60e79770a988

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matthijs - 10 years ago 2014-10-23 10:49:16
matthijs@openttd.org

(svn r27034) -Feature: Support .txt.gz changelog, readme and license files in basesets, newgrfs, etc

1 file changed with 76 insertions and 1 deletions:

src/textfile_gui.cpp

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src/textfile_gui.cpp

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@@ @@ -21,6 +21,10 @@ @@
 #include "table/strings.h"
 #if defined(WITH_ZLIB)
 #include <zlib.h>
 #endif
 #include "safeguards.h"
 /** Widgets for the textfile window. */
@@ @@ -193,6 +197,62 @@ void TextfileWindow::SetupScrollbars() @@
 #endif /* WITH_FREETYPE */
+}
 #if defined(WITH_ZLIB)
 /**
  * Do an in-memory gunzip operation. This works on a raw deflate stream,
  * or a file with gzip or zlib header.
  * @param bufp  A pointer to a buffer containing the input data. This
  *              buffer will be freed and replaced by a buffer containing
  *              the uncompressed data.
  * @param sizep A pointer to the buffer size. Before the call, the value
  *              pointed to should contain the size of the input buffer.
  *              After the call, it contains the size of the uncompressed
  *              data.
+ *
  * When decompressing fails, *bufp is set to NULL and *sizep to 0. The
  * compressed buffer passed in is still freed in this case.
  */
 static void Gunzip(byte **bufp, size_t *sizep)
+{
 	static const int BLOCKSIZE  = 8192;
 	byte             *buf       = NULL;
 	size_t           alloc_size = 0;
 	z_stream         z;
 	int              res;
 	memset(&z, 0, sizeof(z));
 	z.next_in = *bufp;
 	z.avail_in = *sizep;
 	/* window size = 15, add 32 to enable gzip or zlib header processing */
 	res = inflateInit2(&z, 15 + 32);
 	/* Z_BUF_ERROR just means we need more space */
 	while (res == Z_OK || (res == Z_BUF_ERROR && z.avail_out == 0)) {
 		/* When we get here, we're either just starting, or
 		 * inflate is out of output space - allocate more */
 		alloc_size += BLOCKSIZE;
 		z.avail_out += BLOCKSIZE;
 		buf = ReallocT(buf, alloc_size);
 		z.next_out = buf + alloc_size - z.avail_out;
 		res = inflate(&z, Z_FINISH);
+	}
 	free(*bufp);
 	inflateEnd(&z);
 	if (res == Z_STREAM_END) {
 		*bufp = buf;
 		*sizep = alloc_size - z.avail_out;
 	} else {
 		/* Something went wrong */
 		*bufp = NULL;
 		*sizep = 0;
 		free(buf);
+	}
+}
 #endif
 /**
  * Loads the textfile text from file and setup #lines.
  */
@@ @@ -207,12 +267,24 @@ void TextfileWindow::SetupScrollbars() @@
 	FILE *handle = FioFOpenFile(textfile, "rb", dir, &filesize);
 	if (handle == NULL) return;
-	this->text = ReallocT(this->text, filesize + 1);
 	this->text = ReallocT(this->text, filesize);
 	size_t read = fread(this->text, 1, filesize, handle);
 	fclose(handle);
 	if (read != filesize) return;
 #if defined(WITH_ZLIB)
 	const char *suffix = strrchr(textfile, '.');
 	if (suffix == NULL) return;
 	/* In-place gunzip */
 	if (strcmp(suffix, ".gz") == 0) Gunzip((byte**)&this->text, &filesize);
 #endif
 	if (!this->text) return;
 	/* Add space for trailing \0 */
 	this->text = ReallocT(this->text, filesize + 1);
 	this->text[filesize] = '\0';
 	/* Replace tabs and line feeds with a space since str_validate removes those. */
@@ @@ -266,6 +338,9 @@ const char *GetTextfile(TextfileType typ @@
 	static const char * const exts[] = {
 		"txt",
 #if defined(WITH_ZLIB)
 		"txt.gz",
 #endif
 	};
 	for (size_t i = 0; i < lengthof(exts); i++) {

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