wte.h, file.c: refactor colors, add info-makro

makefile

@@ -1,7 +1,14 @@
-.PHONY: all debug
-all: src/wta.c
-	gcc -o build/wta -O2 -Wall -Wextra -pedantic -Werror src/wta.c
+.PHONY: debug release run
 
-debug: src/wta.c
-	gcc -o build/wta -ggdb3 -DDEBUG -Wall -Wextra -pedantic -Werror src/wta.c
+release: src/*.c
+	gcc -o build/wte -O2 -Wall -Wextra -pedantic -Werror src/*.c
+
+run: release
+	./build/wte
+
+debug: src/*.c
+	gcc -o build/wte -ggdb3 -DDEBUG -Wall -Wextra -pedantic -Werror src/*.c
+
+clean:
+	rm -f build/*
 

src/file.c

@@ -0,0 +1,61 @@
+#include <string.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include "wte.h"
+
+char *get_path()
+{
+  const char *home = getenv("HOME");
+  char *path = NULL;
+  if (home) {
+    size_t path_len = strlen(home) + sizeof(DATA_DIR);
+    path = malloc(sizeof(char) * path_len);
+    if (path) {
+      snprintf(path, path_len, "%s" DATA_DIR, home);
+    dbg("path: %s", path);
+    }
+  }
+  return path;
+}
+
+int create_data_dir()
+{
+  int ret = 0;
+  struct stat st;
+  int dir_exists = stat(DATA_DIR, &st);
+  if (-1 == dir_exists) {
+    char *path = get_path();
+    if (path && 0 != (ret = mkdir(path, 0700))) {
+      error("%s", "failed to create directory");
+    } else {
+      info("%s", "created data directory");
+    }
+    free(path);
+  }
+  return ret;
+}
+
+static int remove_file()
+{
+  int ret = 0;
+  return ret;
+}
+
+int remove_data_dir()
+{
+  int ret = 0;
+  ret = remove_file();
+  char *path = get_path();
+  if (path) {
+    // here: for loop to delete all entries in directory
+    ret = remove(path);
+    if (0 == ret) {
+      info("%s", "removed data directory");
+    } else {
+      error("%s", "failed to remove data directory");
+    }
+    free(path);
+  }
+  dbg("ret: %d", ret);
+  return ret;
+}

src/manage.c

@@ -0,0 +1,14 @@
+#include "wte.h"
+
+int insert_choice()
+{
+  int ret = 1;
+  return ret;
+}
+
+int remove_choice()
+{
+  int ret = 1;
+  error("%s", "unable to remove choice");
+  return ret;
+}

src/wta.c

@@ -1,4 +0,0 @@
-int main()
-{
-  return 0;
-}

src/wte.c

@@ -0,0 +1,50 @@
+#include <time.h>
+#include <stdlib.h>
+#include "wte.h"
+
+static size_t get_entry_count()
+{
+  size_t count = 0;
+  count++;
+  return count;
+}
+
+static int make_suggestion()
+{
+  int ret = 0;
+  srandom(time(NULL)); // seed random with current time
+  size_t count = get_entry_count();
+  if (count) {
+    size_t choice = random() % count;
+    printf("choice: %lu", choice);
+  }
+  return ret;
+}
+
+int main(const int argc, const char **argv)
+{
+  int ret = 1;
+  if (2 == argc && '-' == argv[1][0]) {
+    if ('h' == argv[1][1] && '\0' == argv[1][2]) {
+      printf("wte - what to eat\na simple decision making tool for food\nuse without options\n");
+    } else if ('a' == argv[1][1] && '\0' == argv[1][2]) {
+      ret = insert_choice();
+    } else if ('d' == argv[1][1] && '\0' == argv[1][2]) {
+      ret = remove_choice();
+    } else if ('c' == argv[1][1] && '\0' == argv[1][2]) {
+      ret = create_data_dir();
+    } else if ('x' == argv[1][1] && '\0' == argv[1][2]) {
+      ret = remove_data_dir();
+    } else {
+      printf("unrecognized option, try %s -h\n", *argv);
+    }
+    goto exit_main;
+  }
+
+  if (make_suggestion()) {
+    ret = 0;
+  }
+
+exit_main:
+  return ret;
+}

src/wte.h

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#define error(format, ...) do {\
+  fprintf(stderr, c_red format c_end"\n", __VA_ARGS__); \
+} while(0)
+
+#define info(format, ...) do {\
+  fprintf(stdout, c_blue format c_end "\n", __VA_ARGS__); \
+} while(0);
+
+#ifdef DEBUG
+#define dbg(format, ...) do { \
+  printf(c_bold c_lila"[DEBUG] (func: %s) msg: " c_end c_lila format c_end "\n",__func__, __VA_ARGS__); \
+} while(0)
+#else
+#define dbg(format, ...)
+#endif
+
+/* easy colors */
+#define c_red "\033[31m"
+#define c_green "\033[32m"
+#define c_yellow "\033[33m"
+#define c_blue "\033[34m"
+#define c_lila "\033[35m"
+#define c_bold "\033[1m"
+#define c_end "\033[0m"
+
+/* path to data storage */
+#define DATA_DIR "/.local/share/wte"
+
+/* get full path to data storage (with "/home/$USER/"-prefix) */
+char *get_path();
+
+/* data storage creation / deletion */
+int create_data_dir();
+int remove_data_dir();
+
+/* operating on data storage */
+int insert_choice();
+int remove_choice();