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author | Bjørn Lindeijer <bjorn@lindeijer.nl> | 2007-08-17 15:06:18 +0000 |
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committer | Bjørn Lindeijer <bjorn@lindeijer.nl> | 2007-08-17 15:06:18 +0000 |
commit | a91e9498a8be9e26f393cb33f8c1d9ed5e77ff40 (patch) | |
tree | 376ee5e596596ce892fc25e1fb091a1ea4c16ef7 | |
parent | f7cd08def642d709705b252a48ec1bf784f01ef1 (diff) | |
download | mana-client-a91e9498a8be9e26f393cb33f8c1d9ed5e77ff40.tar.gz mana-client-a91e9498a8be9e26f393cb33f8c1d9ed5e77ff40.tar.bz2 mana-client-a91e9498a8be9e26f393cb33f8c1d9ed5e77ff40.tar.xz mana-client-a91e9498a8be9e26f393cb33f8c1d9ed5e77ff40.zip |
Added a small program for calculating adler32 checksums of files.
-rw-r--r-- | ChangeLog | 7 | ||||
-rw-r--r-- | tools/adler32.c | 67 |
2 files changed, 73 insertions, 1 deletions
@@ -1,4 +1,9 @@ -2007-08-15 Philipp Sehmisch <tmw@crushnet.org> +2007-08-17 Bjørn Lindeijer <bjorn@lindeijer.nl> + + * tools/adler32.c: Added little program for calculating adler32 + checksums of files. + +2007-08-15 Philipp Sehmisch <tmw@crushnet.org> * data/graphics/sprites/npcs.png, data/graphics/sprites/npc.xml: Added farmer NPC for woodland village. diff --git a/tools/adler32.c b/tools/adler32.c new file mode 100644 index 00000000..4e851713 --- /dev/null +++ b/tools/adler32.c @@ -0,0 +1,67 @@ +/* + * adler32.c (c) 2006 Bjorn Lindeijer + * License: GPL, v2 or later + * + * Calculates Adler-32 checksums for all files passed as argument. + * + * Usage: adler32 [file]... + */ + +#include <stdio.h> +#include <zlib.h> + +/** + * Calculates the Adler-32 checksum for the given file. + */ +unsigned long fadler32(FILE *file) +{ + // Obtain file size + fseek(file, 0, SEEK_END); + long fileSize = ftell(file); + rewind(file); + + // Calculate Adler-32 checksum + char *buffer = (char*) malloc(fileSize); + fread(buffer, 1, fileSize, file); + unsigned long adler = adler32(0L, Z_NULL, 0); + adler = adler32(adler, (Bytef*) buffer, fileSize); + free(buffer); + + return adler; +} + +/** + * Prints out usage and exists. + */ +void print_usage() +{ + printf("Usage: adler32 [file]...\n"); + exit(0); +} + +int main(int argc, char *argv[]) +{ + int i; /**< Loops through arguments. */ + + if (argc == 1) + { + print_usage(); + } + + for (i = 1; i < argc; ++i) + { + FILE *file = fopen(argv[i], "r"); + + if (!file) + { + printf("Error while opening '%s' for reading!\n", argv[i]); + exit(1); + } + + unsigned long adler = fadler32(file); + printf("%s %lx\n", argv[i], adler); + fclose(file); + } + + return 0; +} |