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1.1 root 1: /*
2: Hatari - paths.c
3:
1.1.1.9 root 4: This file is distributed under the GNU General Public License, version 2
5: or at your option any later version. Read the file gpl.txt for details.
1.1 root 6:
7: Set up the various path strings.
8: */
1.1.1.4 root 9: const char Paths_fileid[] = "Hatari paths.c : " __DATE__ " " __TIME__;
1.1 root 10:
11: #include <unistd.h>
12: #include <sys/stat.h>
13: #include <sys/types.h>
14:
15: #include "main.h"
16: #include "file.h"
17: #include "paths.h"
18:
1.1.1.5 root 19: #if defined(WIN32) && !defined(mkdir)
1.1.1.2 root 20: #define mkdir(name,mode) mkdir(name)
21: #endif /* WIN32 */
22:
1.1.1.10! root 23: #if defined(__MACOSX__)
! 24: #define HATARI_HOME_DIR "Library/Application Support/Hatari"
! 25: #else
! 26: #define HATARI_HOME_DIR ".hatari"
! 27: #endif
! 28:
1.1.1.3 root 29: static char sWorkingDir[FILENAME_MAX]; /* Working directory */
1.1 root 30: static char sDataDir[FILENAME_MAX]; /* Directory where data files of Hatari can be found */
31: static char sUserHomeDir[FILENAME_MAX]; /* User's home directory ($HOME) */
32: static char sHatariHomeDir[FILENAME_MAX]; /* Hatari's home directory ($HOME/.hatari/) */
33:
34:
35: /**
36: * Return pointer to current working directory string
37: */
38: const char *Paths_GetWorkingDir(void)
39: {
40: return sWorkingDir;
41: }
42:
43: /**
44: * Return pointer to data directory string
45: */
46: const char *Paths_GetDataDir(void)
47: {
48: return sDataDir;
49: }
50:
51: /**
52: * Return pointer to user's home directory string
53: */
54: const char *Paths_GetUserHome(void)
55: {
56: return sUserHomeDir;
57: }
58:
59: /**
60: * Return pointer to Hatari's home directory string
61: */
62: const char *Paths_GetHatariHome(void)
63: {
64: return sHatariHomeDir;
65: }
66:
67:
68: /**
69: * Explore the PATH environment variable to see where our executable is
70: * installed.
71: */
1.1.1.3 root 72: static void Paths_GetExecDirFromPATH(const char *argv0, char *pExecDir, int nMaxLen)
1.1 root 73: {
74: char *pPathEnv;
75: char *pAct;
76: char *pTmpName;
77: const char *pToken;
78:
79: /* Get the PATH environment string */
80: pPathEnv = getenv("PATH");
81: if (!pPathEnv)
82: return;
83: /* Duplicate the string because strtok destroys it later */
84: pPathEnv = strdup(pPathEnv);
85: if (!pPathEnv)
86: return;
87:
88: pTmpName = malloc(FILENAME_MAX);
89: if (!pTmpName)
1.1.1.10! root 90: {
! 91: perror("Paths_GetExecDirFromPATH");
! 92: free(pPathEnv);
1.1 root 93: return;
1.1.1.10! root 94: }
1.1 root 95:
96: /* If there is a semicolon in the PATH, we assume it is the PATH
97: * separator token (like on Windows), otherwise we use a colon. */
98: if (strchr((pPathEnv), ';'))
99: pToken = ";";
100: else
101: pToken = ":";
102:
103: pAct = strtok (pPathEnv, pToken);
104: while (pAct)
105: {
106: snprintf(pTmpName, FILENAME_MAX, "%s%c%s",
107: pAct, PATHSEP, argv0);
108: if (File_Exists(pTmpName))
109: {
110: /* Found the executable - so use the corresponding path: */
111: strncpy(pExecDir, pAct, nMaxLen);
112: pExecDir[nMaxLen-1] = 0;
113: break;
114: }
115: pAct = strtok (0, pToken);
116: }
117:
118: free(pPathEnv);
119: free(pTmpName);
120: }
121:
122:
123: /**
124: * Locate the directory where the hatari executable resides
125: */
1.1.1.3 root 126: static char *Paths_InitExecDir(const char *argv0)
1.1 root 127: {
128: char *psExecDir; /* Path string where the hatari executable can be found */
129:
130: /* Allocate memory for storing the path string of the executable */
131: psExecDir = malloc(FILENAME_MAX);
132: if (!psExecDir)
133: {
134: fprintf(stderr, "Out of memory (Paths_Init)\n");
135: exit(-1);
136: }
137:
138: /* Determine the bindir...
139: * Start with empty string, then try to use OS specific functions,
140: * and finally analyze the PATH variable if it has not been found yet. */
141: psExecDir[0] = '\0';
142:
143: #if defined(__linux__)
144: {
145: int i;
146: /* On Linux, we can analyze the symlink /proc/self/exe */
147: i = readlink("/proc/self/exe", psExecDir, FILENAME_MAX);
148: if (i > 0)
149: {
150: char *p;
151: psExecDir[i] = '\0';
152: p = strrchr(psExecDir, '/'); /* Search last slash */
153: if (p)
154: *p = 0; /* Strip file name from path */
155: }
156: }
157: //#elif defined(WIN32) || defined(__CEGCC__)
158: // /* On Windows we can use GetModuleFileName for getting the exe path */
159: // GetModuleFileName(NULL, psExecDir, FILENAME_MAX);
160: #endif
161:
162: /* If we do not have the execdir yet, analyze argv[0] and the PATH: */
163: if (psExecDir[0] == 0)
164: {
165: if (strchr(argv0, PATHSEP) == 0)
166: {
167: /* No separator in argv[0], we have to explore PATH... */
168: Paths_GetExecDirFromPATH(argv0, psExecDir, FILENAME_MAX);
169: }
170: else
171: {
172: /* There was a path separator in argv[0], so let's assume a
173: * relative or absolute path to the current directory in argv[0] */
174: char *p;
175: strncpy(psExecDir, argv0, FILENAME_MAX);
176: psExecDir[FILENAME_MAX-1] = 0;
177: p = strrchr(psExecDir, PATHSEP); /* Search last slash */
178: if (p)
179: *p = 0; /* Strip file name from path */
180: }
181: }
182:
183: return psExecDir;
184: }
185:
186:
187: /**
188: * Initialize the users home directory string
189: * and Hatari's home directory (~/.hatari)
190: */
191: static void Paths_InitHomeDirs(void)
192: {
193: char *psHome;
194:
195: psHome = getenv("HOME");
1.1.1.8 root 196: if (psHome)
197: strncpy(sUserHomeDir, psHome, FILENAME_MAX);
198: #if defined(WIN32)
199: else
1.1 root 200: {
1.1.1.8 root 201: char *psDrive;
202: int len = 0;
1.1.1.6 root 203: /* Windows home path? */
204: psHome = getenv("HOMEPATH");
1.1.1.8 root 205: psDrive = getenv("HOMEDRIVE");
206: if (psDrive)
207: {
208: len = strlen(psDrive);
209: len = len < FILENAME_MAX ? len : FILENAME_MAX;
210: strncpy(sUserHomeDir, psDrive, len);
211: }
212: if (psHome)
213: strncpy(sUserHomeDir+len, psHome, FILENAME_MAX-len);
1.1.1.6 root 214: }
1.1.1.8 root 215: #endif
1.1.1.6 root 216: if (!psHome)
217: {
1.1 root 218: /* $HOME not set, so let's use current working dir as home */
219: strcpy(sUserHomeDir, sWorkingDir);
220: strcpy(sHatariHomeDir, sWorkingDir);
221: }
222: else
223: {
224: sUserHomeDir[FILENAME_MAX-1] = 0;
225:
226: /* Try to use a .hatari directory in the users home directory */
1.1.1.10! root 227: snprintf(sHatariHomeDir, FILENAME_MAX, "%s%c%s", sUserHomeDir,
! 228: PATHSEP, HATARI_HOME_DIR);
1.1.1.7 root 229: if (!File_DirExists(sHatariHomeDir))
1.1 root 230: {
231: /* Hatari home directory does not exists yet...
232: * ...so let's try to create it: */
233: if (mkdir(sHatariHomeDir, 0755) != 0)
234: {
235: /* Failed to create, so use user's home dir instead */
236: strcpy(sHatariHomeDir, sUserHomeDir);
237: }
238: }
239: }
240: }
241:
242:
243: /**
244: * Initialize directory names
245: *
246: * The datadir will be initialized relative to the bindir (where the executable
247: * has been installed to). This means a lot of additional effort since we first
248: * have to find out where the executable is. But thanks to this effort, we get
249: * a relocatable package (we don't have any absolute path names in the program)!
250: */
1.1.1.3 root 251: void Paths_Init(const char *argv0)
1.1 root 252: {
253: char *psExecDir; /* Path string where the hatari executable can be found */
254:
255: /* Init working directory string */
1.1.1.5 root 256: if (getcwd(sWorkingDir, FILENAME_MAX) == NULL)
257: {
258: /* This should never happen... just in case... */
259: strcpy(sWorkingDir, ".");
260: }
1.1 root 261:
262: /* Init the user's home directory string */
263: Paths_InitHomeDirs();
264:
265: /* Get the directory where the executable resides */
266: psExecDir = Paths_InitExecDir(argv0);
267:
268: /* Now create the datadir path name from the bindir path name: */
269: if (psExecDir && strlen(psExecDir) > 0)
270: {
271: snprintf(sDataDir, sizeof(sDataDir), "%s%c%s",
272: psExecDir, PATHSEP, BIN2DATADIR);
273: }
274: else
275: {
276: /* bindir could not be determined, let's assume datadir is relative
277: * to current working directory... */
278: strcpy(sDataDir, BIN2DATADIR);
279: }
280:
281: /* And finally make a proper absolute path out of datadir: */
282: File_MakeAbsoluteName(sDataDir);
283:
284: free(psExecDir);
285:
286: /* fprintf(stderr, " WorkingDir = %s\n DataDir = %s\n UserHomeDir = %s\n HatariHomeDir = %s\n",
287: sWorkingDir, sDataDir, sUserHomeDir, sHatariHomeDir); */
288: }
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