diff options
Diffstat (limited to 'lz4c.c')
| -rw-r--r-- | lz4c.c | 20 |
1 files changed, 13 insertions, 7 deletions
@@ -24,9 +24,9 @@ /*
Note : this is stand-alone program.
It is not part of LZ4 compression library, it is a user program of LZ4 library.
- The license of LZ4 is BSD.
- The license of xxHash is BSD.
- The license of the compression program is GPLv2.
+ The license of LZ4 library is BSD.
+ The license of xxHash library is BSD.
+ The license of this compression CLI program is GPLv2.
*/
//**************************************
@@ -162,7 +162,7 @@ static int streamChecksum = 1; int usage(char* exename)
{
DISPLAY( "Usage :\n");
- DISPLAY( " %s [arg] input output\n", exename);
+ DISPLAY( " %s [arg] input [output]\n", exename);
DISPLAY( "Arguments :\n");
DISPLAY( " -c0/-c : Fast compression (default) \n");
DISPLAY( " -c1/-hc: High compression \n");
@@ -819,7 +819,7 @@ int main(int argc, char** argv) // No output filename ==> build one automatically (for compression only)
if (!output_filename)
{
- if (!decode)
+ if (!decode) // compression
{
int i=0, l=0;
while (input_filename[l]!=0) l++;
@@ -829,9 +829,15 @@ int main(int argc, char** argv) }
else
{
- badusage(exename);
- return 1;
+ int inl=0,outl;
+ while (input_filename[inl]!=0) inl++;
+ output_filename = (char*)calloc(1,inl+1);
+ for (outl=0;outl<inl;outl++) output_filename[outl] = input_filename[outl];
+ if (inl>4)
+ while ((outl >= inl-4) && (input_filename[outl] == extension[outl-inl+4])) output_filename[outl--]=0;
+ if (outl != inl-5) output_filename = NULL;
}
+ if (!output_filename) { badusage(exename); return 1; }
}
if (decode) return decodeFile(input_filename, output_filename);
|