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-rw-r--r--src/gipfel.cxx59
1 files changed, 37 insertions, 22 deletions
diff --git a/src/gipfel.cxx b/src/gipfel.cxx
index 8fbe536..bd605a8 100644
--- a/src/gipfel.cxx
+++ b/src/gipfel.cxx
@@ -12,6 +12,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <math.h>
+#include <assert.h>
#include <algorithm>
#include <FL/Fl.H>
@@ -43,8 +44,10 @@
#define GIPFEL_DATADIR "/usr/local/share"
#endif
-#define DEFAULT_DATAFILE GIPFEL_DATADIR "/" PACKAGE_NAME "/gipfel.dat"
+#define DATAFILE "gipfel.dat"
+#define DEFAULT_DATADIR GIPFEL_DATADIR "/" PACKAGE_NAME
+char *run_dir = NULL;
char *img_file = NULL;
char *data_file = NULL;
@@ -79,6 +82,26 @@ confirm_overwrite(const char *f) {
return 1;
}
+static char *
+file_installed_or_local(const char *inst_dir, const char *name) {
+ assert(run_dir);
+
+ struct stat sb;
+ int buflen = strlen(inst_dir) + strlen(run_dir) + strlen(name) + 1;
+ char *buf = (char *) malloc (buflen);
+
+ snprintf(buf, buflen, "%s/%s", inst_dir, name);
+ if (stat(buf, &sb) == 0)
+ return buf;
+
+ snprintf(buf, buflen, "%s/../%s", run_dir, name);
+ if (stat(buf, &sb) == 0)
+ return buf;
+
+ free(buf);
+ return NULL;
+}
+
void set_values() {
double k0 = 0.0, k1 = 0.0, x0 = 0.0;
@@ -265,16 +288,20 @@ void about_cb() {
}
void readme_cb() {
+ char *readme = file_installed_or_local(DOCDIR, "README");
+ if (!readme) {
+ fprintf(stderr, "README file not found\n");
+ return;
+ }
Fl_Window *win = new Fl_Window(800, 600, "README");
Fl_Text_Buffer *textBuf = new Fl_Text_Buffer();
Fl_Text_Display *textDisp = new Fl_Text_Display(0, 0, win->w(), win->h());
- char buf[PATH_MAX];
textDisp->textfont(FL_COURIER);
textDisp->buffer(textBuf);
win->resizable(textDisp);
- snprintf(buf, PATH_MAX, "%s/README", DOCDIR);
- textBuf->appendfile(buf);
+ textBuf->appendfile(readme);
+ free(readme);
win->end();
win->show();
}
@@ -545,27 +572,15 @@ int main(int argc, char** argv) {
my_argc = argc - optind;
my_argv = argv + optind;
+ char *exec_file = strdup(argv[0]);
+ run_dir = strdup(dirname(exec_file));
+ free(exec_file);
+
if (my_argc >= 1)
img_file = strdup(my_argv[0]);
- if (data_file == NULL) {
- struct stat sb;
-
- if (stat(DEFAULT_DATAFILE, &sb) == 0) {
- data_file = DEFAULT_DATAFILE;
- } else {
- // check for gipfel.dat in local tarball
- char *exec_file = strdup(argv[0]);
- data_file = (char *) malloc (strlen (exec_file) + 64);
- snprintf(data_file, strlen (exec_file) + 64, "%s/../gipfel.dat",
- dirname(exec_file));
- free(exec_file);
- if (stat(data_file, &sb) != 0) {
- free(data_file);
- data_file = NULL;
- }
- }
- }
+ if (data_file == NULL)
+ data_file = file_installed_or_local(DEFAULT_DATADIR, "gipfel.dat");
if (data_file == NULL || err) {
usage();