1 files changed, 105 insertions, 0 deletions
diff --git a/src/common.c b/src/common.c
new file mode 100644
index 0000000..062c6dd
--- /dev/null
+++ b/src/common.c
@@ -0,0 +1,105 @@
+/**
+ * Dailyjournal is an easy tool to log daily activities
+ * Copyright (C) 2022  Aaron Ball <nullspoon@oper.io>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "common.h"
+
+void get_user_editor(char* editor) {
+  if(getenv("EDITOR") != NULL)
+    strcpy(editor, getenv("EDITOR"));
+  else
+    strcpy(editor, "vi");
+}
+
+int fedit(char* path) {
+  char editor[256];
+  char cmd[512];
+  get_user_editor(editor);
+  sprintf(cmd, "%s %s", editor, path);
+  return system(cmd);
+}
+
+int fexists(char* path) {
+  FILE* fd = fopen(path, "r");
+  if(!fd)
+    return 0;
+  fclose(fd);
+  return 1;
+}
+
+int safe_cp(char* src, char* dest) {
+  FILE* fdsrc = NULL;
+  FILE* fddest = NULL;
+  char c = '\0';
+
+  fdsrc = fopen(src, "r");
+  if(!fdsrc)
+    return -2;
+
+  // Open destination file for appending, juuuuust in case it already exists
+  fddest = fopen(dest, "r");
+  if(fddest) {
+    fclose(fddest);
+    fclose(fdsrc);
+    return 0;
+  }
+
+  fddest = fopen(dest, "a+");
+  if(! fddest)
+    return -2;
+
+  while((c = fgetc(fdsrc)) != EOF)
+    fputc(c, fddest);
+
+  fclose(fdsrc);
+  fclose(fddest);
+  return 0;
+}
+
+void getdate(int days, char* out, int outsize) {
+  time_t t;
+  struct tm* tmnow;
+
+  t = time(NULL);
+  t = t + (days * 86400);
+  tmnow = localtime(&t);
+
+  strftime(out, outsize, "%F", tmnow);
+}
+
+void getpath(char* base, int days, char* out, char* extension) {
+  char filename[128];
+  // time_t t;
+  // struct tm* tmnow;
+  // t = time(NULL);
+  // t = t + (days * 86400);
+  // tmnow = localtime(&t);
+
+  //strftime(filename, 256, "%F", tmnow);
+
+  getdate(days, filename, 128);
+
+  sprintf(out, "%s/%s%s", base, filename, extension);
+}
+
+int env_if_set(char* buf, char* varname) {
+  char* env = getenv(varname);
+  if(env != NULL) {
+    sprintf(buf, "%s", env);
+    return 0;
+  }
+  return 1;
+}