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Fix posix's platform_file_copy (#3500)

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The method may fail to properly copy data for files of sizes not being
a multiple of FILE_BUFFER_SIZE.
This commit is contained in:
janisozaur
2016-05-05 23:59:27 +02:00
committed by Ted John
parent 929ac48ccc
commit fe826cd64f
1 changed files with 9 additions and 0 deletions
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9
src/platform/posix.c
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@@ -595,12 +595,21 @@ bool platform_file_copy(const utf8 *srcPath, const utf8 *dstPath, bool overwrite
}
size_t amount_read = 0;
size_t file_offset = 0;
// Copy file in FILE_BUFFER_SIZE-d chunks
char* buffer = (char*) malloc(FILE_BUFFER_SIZE);
while ((amount_read = fread(buffer, FILE_BUFFER_SIZE, 1, srcFile))) {
fwrite(buffer, amount_read, 1, dstFile);
file_offset += amount_read;
}
// Finish the left-over data from file, which may not be a full
// FILE_BUFFER_SIZE-d chunk.
fseek(srcFile, file_offset, SEEK_SET);
amount_read = fread(buffer, 1, FILE_BUFFER_SIZE, srcFile);
fwrite(buffer, amount_read, 1, dstFile);
fclose(srcFile);
fclose(dstFile);
free(buffer);