79 lines
1.4 KiB
C
79 lines
1.4 KiB
C
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/* $Id: path.c,v 1.1 2003/04/04 20:42:13 momjian Exp $ */
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#include "c.h"
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#include <ctype.h>
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/*
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* is_absolute_path
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*/
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bool is_absolute_path(const char *filename)
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{
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return filename[0] == '/'
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#ifdef WIN32 /* WIN32 paths can either have forward or backward slashes */
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|| filename[0] == '\\'
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|| (isalpha(filename[0]) && filename[1] == ':'
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&& (filename[2] == '\\' || filename[2] == '/'))
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#endif
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;
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}
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/*
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* first_path_separator
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*/
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char *first_path_separator(const char *filename)
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{
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#ifndef WIN32
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return strchr(filename, '/');
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#else
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char *slash, *bslash;
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/* How should we handle "C:file.c"? */
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slash = strchr(filename, '/');
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bslash = strchr(filename, '\\');
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if (slash == NULL)
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return bslash;
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else if (bslash == NULL)
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return slash;
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else
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return (slash < bslash) ? slash : bslash;
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#endif
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}
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/*
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* last_path_separator
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*/
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char *last_path_separator(const char *filename)
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{
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#ifndef WIN32
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return strrchr(filename, '/');
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#else
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char *slash, *bslash;
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/* How should we handle "C:file.c"? */
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slash = strrchr(filename, '/');
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bslash = strrchr(filename, '\\');
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if (slash == NULL)
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return bslash;
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else if (bslash == NULL)
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return slash;
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else
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return (slash > bslash) ? slash : bslash;
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#endif
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}
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/*
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* Extracts the actual name of the program as called.
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*/
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char *
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get_progname(char *argv0)
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{
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if (!last_path_separator(argv0))
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return argv0;
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else
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return last_path_separator(argv0) + 1;
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}
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