libextractor

commit 4b20c0b37ac2034011fc726ec880c2e0aa93cd8e
parent 7de69d369e2c1d36963ceba1954a93cbbdb72294
Author: Heikki Lindholm <holin@iki.fi>
Date:   Tue,  5 Feb 2008 17:35:48 +0000

add OS X specific installation path discovery


Diffstat:
M
src/include/platform.h
 | 
5
+++++
M
src/main/extractor.c
 | 
39
+++++++++++++++++++++++++++++++++++++++

2 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/src/include/platform.h b/src/include/platform.h
@@ -60,4 +60,9 @@
 #include <iconv.h>
 #include <langinfo.h>
 
+#if DARWIN
+#include <mach-o/dyld.h>
+#include <mach-o/ldsyms.h>
+#endif
+
 #endif
diff --git a/src/main/extractor.c b/src/main/extractor.c
@@ -386,6 +386,32 @@ static char * get_path_from_module_filename() {
 }
 #endif
 
+#if DARWIN
+static char * get_path_from_dyld_image() {
+  const char * path;
+  char * p, * s;
+  int i;
+  int c;
+
+  p = NULL;
+  c = _dyld_image_count();
+  for (i = 0; i < c; i++) {
+    if (_dyld_get_image_header(i) == &_mh_dylib_header) {
+      path = _dyld_get_image_name(i);
+      if (path != NULL) {
+        p = strdup(path);
+        s = p + strlen(p);
+        while ( (s > p) && (*s != '/') )
+          s--;
+        *s = '\0';
+      }
+      break;
+    }
+  }
+  return p;
+}
+#endif
+
 /**
  * This may also fail -- for example, if extract
  * is not also installed.
@@ -451,6 +477,7 @@ static char * os_get_installation_path() {
   char * lpref;
   char * pexe;
   char * modu;
+  char * dima;
   char * path;
 
   lpref = get_path_from_ENV_PREFIX();
@@ -464,6 +491,11 @@ static char * os_get_installation_path() {
 #else
   modu = NULL;
 #endif
+#if DARWIN
+  dima = get_path_from_dyld_image();
+#else
+  dima = NULL;
+#endif
   path = get_path_from_PATH();
   n = 1;
   if (lpref != NULL)
@@ -472,6 +504,8 @@ static char * os_get_installation_path() {
     n += strlen(pexe) + strlen("/lib/libextractor/:");
   if (modu != NULL)
     n += strlen(modu) + strlen("/lib/libextractor/:");
+  if (dima != NULL)
+    n += strlen(dima) + strlen("/libextractor/:");
   if (path != NULL)
     n += strlen(path) + strlen("/lib/libextractor/:");
   tmp = malloc(n);
@@ -491,6 +525,11 @@ static char * os_get_installation_path() {
     strcat(tmp, "/lib/libextractor/:");
     free(modu);
   }
+  if (dima != NULL) {
+    strcat(tmp, dima);
+    strcat(tmp, "/libextractor/:");
+    free(dima);
+  }
   if (path != NULL) {
     strcat(tmp, path);
     strcat(tmp, "/lib/libextractor/:");