mirror of https://github.com/cc65/cc65.git
118 lines
4.5 KiB
C
118 lines
4.5 KiB
C
/*****************************************************************************/
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/* */
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/* fname.c */
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/* */
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/* File name handling utilities */
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/* */
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/* */
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/* */
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/* (C) 2000-2003 Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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#include <string.h>
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#include "xmalloc.h"
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#include "fname.h"
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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const char* FindExt (const char* Name)
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/* Return a pointer to the file extension in Name or NULL if there is none */
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{
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const char* S;
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/* Get the length of the name */
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unsigned Len = strlen (Name);
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if (Len < 2) {
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return 0;
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}
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/* Get a pointer to the last character */
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S = Name + Len - 1;
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/* Search for the dot, beware of subdirectories */
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while (S >= Name && *S != '.' && *S != '\\' && *S != '/') {
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--S;
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}
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/* Did we find an extension? */
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if (*S == '.') {
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return S;
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} else {
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return 0;
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}
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}
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const char* FindName (const char* Path)
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/* Return a pointer to the file name in Path. If there is no path leading to
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** the file, the function returns Path as name.
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*/
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{
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/* Get the length of the name */
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int Len = strlen (Path);
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/* Search for the path separator */
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while (Len > 0 && Path[Len-1] != '\\' && Path[Len-1] != '/') {
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--Len;
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}
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/* Return the name or path */
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return Path + Len;
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}
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char* MakeFilename (const char* Origin, const char* Ext)
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/* Make a new file name from Origin and Ext. If Origin has an extension, it
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** is removed and Ext is appended. If Origin has no extension, Ext is simply
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** appended. The result is placed in a malloc'ed buffer and returned.
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** The function may be used to create "foo.o" from "foo.s".
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*/
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{
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char* Out;
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const char* P = FindExt (Origin);
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if (P == 0) {
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/* No dot, add the extension */
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Out = xmalloc (strlen (Origin) + strlen (Ext) + 1);
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strcpy (Out, Origin);
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strcat (Out, Ext);
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} else {
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Out = xmalloc (P - Origin + strlen (Ext) + 1);
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memcpy (Out, Origin, P - Origin);
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strcpy (Out + (P - Origin), Ext);
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}
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return Out;
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}
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