1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gclib/utils.c	Tue Jan 24 23:54:05 2012 +0000
     1.3 @@ -0,0 +1,46 @@
     1.4 +#include <stdlib.h>
     1.5 +#include <string.h>
     1.6 +#include <unistd.h>
     1.7 +#include <gclib/mem.h>
     1.8 +#include <gclib/strfuncs.h>
     1.9 +#include <gclib/utils.h>
    1.10 +
    1.11 +#define is_valid_drive(d)	((d)>='a' && (d)<='z' || (d)>='A' && (d)<='Z')
    1.12 +
    1.13 +/*
    1.14 + * Gets the last component of the filename. If filename ends with a directory
    1.15 + * separator it gets the component before the last slash. If filename consists
    1.16 + * only of directory separators (and on Windows, possibly a drive letter), a
    1.17 + * single separator is returned. If filename is empty, it gets ".".
    1.18 + */
    1.19 +char *path_get_basename(const char *filename)
    1.20 +{
    1.21 +    ssize_t base,last_nonslash;
    1.22 +    size_t len;
    1.23 +    char *retval;
    1.24 +    if (*filename=='\0')
    1.25 +        return str_dup(".");
    1.26 +    last_nonslash=strlen(filename)-1;
    1.27 +    while (last_nonslash>=0 && GC_IS_DIR_SEPARATOR(filename[last_nonslash]))
    1.28 +	last_nonslash--;
    1.29 +    if (last_nonslash<0)
    1.30 +	/* string only containing slashes */
    1.31 +    return str_dup(GC_DIR_SEPARATOR_S);
    1.32 +#ifdef WIN32
    1.33 +    if (last_nonslash==1 && is_valid_drive(filename[0]) && filename[1]==':')
    1.34 +	/* string only containing slashes and a drive */
    1.35 +	return str_dup(GC_DIR_SEPARATOR_S);
    1.36 +#endif
    1.37 +    base=last_nonslash;
    1.38 +    while (base>=0 && !GC_IS_DIR_SEPARATOR(filename[base]))
    1.39 +	base--;
    1.40 +#ifdef WIN32
    1.41 +    if (base==-1 && is_valid_drive(filename[0]) && filename[1] == ':')
    1.42 +	  base=1;
    1.43 +#endif
    1.44 +    len=last_nonslash-base;
    1.45 +    retval=mem_alloc(len+1,1);
    1.46 +    memcpy(retval,filename+base+1,len);
    1.47 +    retval[len]='\0';
    1.48 +    return retval;
    1.49 +}