Divide source code from other stuff

2026-03-25 07:50:40 +01:00 · 2018-06-23 13:04:42 +02:00
parent 3ded41ce44
commit 9f55672aa2
17 changed files with 3 additions and 2 deletions
--- a/src/args.c
+++ b/src/args.c
@@ -0,0 +1,93 @@
+#include <getopt.h>
+#include <stdio.h>
+#include <string.h>
+#include "args.h"
+
+#define ARG_STR_STYLE "style"
+#define ARG_STR_HELP  "help"
+#define ARG_CHAR_STYLE 's'
+#define ARG_CHAR_HELP  'h'
+#define STYLE_STR_1 "default"
+#define STYLE_STR_2 "dark"
+
+struct args_struct {
+  int help_flag;
+  STYLE style;
+};
+
+static const char* SYTLES_STR_LIST[STYLES_COUNT] = { STYLE_STR_1, STYLE_STR_2 };
+static struct args_struct args;
+
+STYLE parseStyle(char* style) {
+  int i = 0;
+  while(i != STYLES_COUNT && strcmp(SYTLES_STR_LIST[i],style) != 0)
+    i++;
+
+  if(i == STYLES_COUNT)
+    return STYLE_INVALID;
+  return i;
+}
+
+STYLE getStyle() {
+  return args.style;
+}
+
+int showHelp() {
+  return args.help_flag;
+}
+
+int parseArgs(int argc, char* argv[]) {
+  int c;
+  int digit_optind = 0;
+  int option_index = 0;
+  opterr = 0;
+
+  args.help_flag = BOOLEAN_FALSE;
+  args.style = STYLE_EMPTY;
+
+  static struct option long_options[] = {
+      {ARG_STR_STYLE, required_argument, 0, ARG_CHAR_STYLE},
+      {ARG_STR_HELP,  no_argument,       0, ARG_CHAR_HELP },
+      {0, 0, 0, 0}
+  };
+
+  c = getopt_long(argc, argv,"",long_options, &option_index);
+
+  while (c != -1) {
+     if(c == ARG_CHAR_STYLE) {
+       if(args.style != STYLE_EMPTY) {
+         printf("ERROR: Style option specified more than once\n");
+         return BOOLEAN_FALSE;
+       }
+       args.style = parseStyle(optarg);
+       if(args.style == STYLE_INVALID) {
+          printf("ERROR: Invalid style '%s'\n",optarg);
+          return BOOLEAN_FALSE;
+       }
+     }
+     else if(c == ARG_CHAR_HELP) {
+       if(args.help_flag) {
+         printf("ERROR: Help option specified more than once\n");
+         return BOOLEAN_FALSE;
+       }
+       args.help_flag  = BOOLEAN_TRUE;
+     }
+     else if(c == '?') {
+       printf("WARNING: Invalid options\n");
+       args.help_flag  = BOOLEAN_TRUE;
+       break;
+     }
+     else
+      printf("Bug at line number %d in file %s\n", __LINE__, __FILE__);
+
+    option_index = 0;
+    c = getopt_long(argc, argv,"",long_options, &option_index);
+  }
+
+  if (optind < argc) {
+    printf("WARNING: Invalid options\n");
+    args.help_flag  = BOOLEAN_TRUE;
+  }
+
+  return BOOLEAN_TRUE;
+}