ex.c

   1 #include <stdlib.h>
   2 #include <string.h>
   3 #include <gtk/gtk.h>
   4 #include "geevi.h"
   5
   6 void edit(struct vi *vi, char *name)
   7 {
   8         char *text;
   9         size_t length;
  10         GtkTextIter iter;
  11         GtkTextBuffer *buffer;
  12         if (!*name)
  13                 return;
  14         strcpy(vi->filename, name);
  15         buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(vi->view));
  16         if (!g_file_get_contents(name, &text, &length, NULL)) {
  17                 fprintf(stderr, "could not open file\n");
  18                 gtk_text_buffer_set_text(buffer, "", -1);
  19                 return;
  20         }
  21         gtk_text_buffer_set_text(buffer, text, -1);
  22         gtk_text_buffer_get_start_iter(buffer, &iter);
  23         cursor_place(GTK_TEXT_VIEW(vi->view), &iter);
  24         g_free(text);
  25 }
  26
  27 static void write(struct vi *vi)
  28 {
  29         GtkTextIter start, end;
  30         char *text;
  31         GtkTextBuffer *buffer;
  32         if (!*vi->filename)
  33                 return;
  34         buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(vi->view));
  35         gtk_text_buffer_get_start_iter(buffer, &start);
  36         gtk_text_buffer_get_end_iter(buffer, &end);
  37         text = gtk_text_buffer_get_text(buffer, &start, &end, TRUE);
  38         if (!g_file_set_contents(vi->filename, text, strlen(text), NULL))
  39                 fprintf(stderr, "could not write file\n");
  40         g_free(text);
  41 }
  42
  43 static void quit()
  44 {
  45         gtk_main_quit();
  46 }
  47
  48 static int startswith(char *heystack, char *needle)
  49 {
  50         while (*needle && *needle == *heystack++)
  51                 needle++;
  52         return !*needle;
  53 }
  54
  55 void execcmd(struct vi *vi, char *cmd)
  56 {
  57         if (!strcmp(":q", cmd) || !strcmp(":q!", cmd))
  58                 quit();
  59         if (startswith(cmd, ":e "))
  60                 edit(vi, cmd + 3);
  61         if (!strcmp(":w", cmd))
  62                 write(vi);
  63         if (!strcmp(":wq", cmd)) {
  64                 write(vi);
  65                 quit();
  66         }
  67         if (startswith(cmd, "/") || startswith(cmd, "?")) {
  68                 char *keyword = cmd + 1;
  69                 strncpy(vi->word, keyword, MAX_COMMAND_LENGTH);
  70                 vi->word[MAX_COMMAND_LENGTH - 1] = '\0';
  71         }
  72 }