1 /*****************************************************************************/
5 /* Include path handling for cc65 */
9 /* (C) 2000-2003 Ullrich von Bassewitz */
10 /* Römerstrasse 52 */
11 /* D-70794 Filderstadt */
12 /* EMail: uz@cc65.org */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
40 /* Microsoft compiler */
55 /*****************************************************************************/
57 /*****************************************************************************/
61 static char* SysIncludePath = 0;
62 static char* UserIncludePath = 0;
66 /*****************************************************************************/
68 /*****************************************************************************/
72 static char* Add (char* Orig, const char* New)
73 /* Create a new path from Orig and New, delete Orig, return the result */
75 unsigned OrigLen, NewLen;
78 /* Get the length of the original string */
79 OrigLen = Orig? strlen (Orig) : 0;
81 /* Get the length of the new path */
82 NewLen = strlen (New);
84 /* Check for a trailing path separator and remove it */
85 if (NewLen > 0 && (New [NewLen-1] == '\\' || New [NewLen-1] == '/')) {
89 /* Allocate memory for the new string */
90 NewPath = (char*) xmalloc (OrigLen + NewLen + 2);
92 /* Copy the strings */
93 memcpy (NewPath, Orig, OrigLen);
94 memcpy (NewPath+OrigLen, New, NewLen);
95 NewPath [OrigLen+NewLen+0] = ';';
96 NewPath [OrigLen+NewLen+1] = '\0';
98 /* Delete the original path */
101 /* Return the new path */
107 static char* Find (const char* Path, const char* File)
108 /* Search for a file in a list of directories. If found, return the complete
109 * name including the path in a malloced data area, if not found, return 0.
114 char PathName [FILENAME_MAX];
116 /* Initialize variables */
117 Max = sizeof (PathName) - strlen (File) - 2;
123 /* Handle a NULL pointer as replacement for an empty string */
128 /* Start the search */
130 /* Copy the next path element into the buffer */
132 while (*P != '\0' && *P != ';' && Count < Max) {
133 PathName [Count++] = *P++;
136 /* Add a path separator and the filename */
138 PathName [Count++] = '/';
140 strcpy (PathName + Count, File);
142 /* Check if this file exists */
143 if (access (PathName, 0) == 0) {
144 /* The file exists */
145 return xstrdup (PathName);
148 /* Skip a list separator if we have one */
160 void AddIncludePath (const char* NewPath, unsigned Where)
161 /* Add a new include path to the existing one */
163 /* Allow a NULL path */
165 if (Where & INC_SYS) {
166 SysIncludePath = Add (SysIncludePath, NewPath);
168 if (Where & INC_USER) {
169 UserIncludePath = Add (UserIncludePath, NewPath);
176 char* FindInclude (const char* Name, unsigned Where)
177 /* Find an include file. Return a pointer to a malloced area that contains
178 * the complete path, if found, return 0 otherwise.
181 if (Where & INC_SYS) {
182 /* Search in the system include directories */
183 return Find (SysIncludePath, Name);
185 if (Where & INC_USER) {
186 /* Search in the user include directories */
187 return Find (UserIncludePath, Name);
194 void InitIncludePaths (void)
195 /* Initialize the include path search list */
199 /* Add some standard paths to the include search path */
200 AddIncludePath ("", INC_USER); /* Current directory */
201 AddIncludePath ("include", INC_SYS);
203 AddIncludePath (CC65_INC, INC_SYS);
205 AddIncludePath ("/usr/lib/cc65/include", INC_SYS);
207 Path = getenv ("CC65_INC");
209 AddIncludePath (Path, INC_SYS | INC_USER);