Implement printing a header

[c128-kasse] / src / config.c

diff --git a/src/config.c b/src/config.c
index db80ce38a36f92540227b92fde0ecf15f76d5013..266f441fe81de9800647c34ec7c22dc209c9b0db 100644 (file)
--- a/src/config.c
+++ b/src/config.c
@@ -1,6 +1,6 @@
 /* 
  * RGB2R-C128-Kassenprogramm
- * (c) 2007 phil_fry, sECuRE, sur5r
+ * © 2007-2009 phil_fry, sECuRE, sur5r
  * See LICENSE for license information
  *
  */
@@ -11,16 +11,23 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdbool.h>
+
+#include "kasse.h"
 #include "general.h"
 #include "config.h"
+#include "print.h"
 
-/* undocumented function which scratches files */
+/* NOTE: undocumented function which scratches files
+   We need to use this function because linking unistd.h
+   makes our program break at runtime.
+ */
 unsigned char __fastcall__ _sysremove(const char *name);
 
 unsigned long int money = 0;
 unsigned long int items_sold = 0;
 BYTE printer_port = 4;
-static bool files_existing = false;
+static bool items_exists = false;
+static bool credits_exists = false;
 struct status_array_t status;
 struct credits_array_t credits;
 
@@ -30,47 +37,94 @@ struct credits_array_t credits;
  * files directly)
  *
  */
-bool lookup_needed_files() {
-       BYTE lfn = 8;
-       BYTE files_existing = 0;
-       struct cbm_dirent *dirent;
+static void lookup_needed_files() {
+       BYTE lfn = 8, c;
+       struct cbm_dirent dirent;
+       char *buffer = malloc(sizeof(char) * 64 * 100);
+       char *walk;
+       char filename[8];
+       int n;
+
+       if (buffer == NULL) {
+               cprintf("Not enough memory available\r\n");
+               exit(1);
+       }
 
        if (cbm_opendir(lfn, (BYTE)8) != 0) {
                cprintf("could not open directory\r\n");
-               return false;
+               return;
+       }
+       while (cbm_readdir(lfn, &dirent) == 0) {
+               /* NOTE: You MUST NOT delete any logfiles. This does only work
+                * under the assumption that logfiles are named continuously */
+               if (strncmp(dirent.name, "log", 3) == 0)
+                       log_num++;
+               if (strcasecmp(dirent.name, "items") == 0)
+                       items_exists = true;
+               if (strcasecmp(dirent.name, "credits") == 0)
+                       credits_exists = true;
        }
-       while (cbm_readdir(lfn, dirent) == 0)
-               if (    strcasecmp(dirent->name, "items") == 0 ||
-                       strcasecmp(dirent->name, "credits") == 0)
-                       files_existing++;
        cbm_closedir(lfn);
-       return (files_existing >= 2);
+
+       /* Try to find out how many lines the last logfile got to seamlessly
+        * append to it, if we got more than one logfile. */
+       if (log_num > 0) {
+               log_num--;
+
+               sprintf(filename, "log-%u", log_num);
+               if ((c = cbm_open(lfn, (BYTE)8, (BYTE)CBM_READ, filename)) != 0) {
+                       c128_perror(c, "cbm_open(log) for reading");
+                       exit(1);
+               }
+               n = cbm_read(lfn, buffer, sizeof(char) * 64 * 100);
+               if (n < 0) {
+                       cprintf("error while cbm_read()ing the logfile\r\n");
+                       exit(1);
+               }
+               buffer[n] = '\0';
+               for (walk = buffer; (walk - buffer) < n; walk++) {
+                       if (*walk == '\r' || *walk == '\n')
+                               log_lines_written++;
+               }
+               cbm_close(lfn);
+       }
+
+       free(buffer);
 }
 
 void load_items() {
-       if (files_existing)
+       BYTE c;
+
+       if (items_exists) {
+               items_sold = 0;
                cbm_load("items", (BYTE)8, &status);
+               for (c = 0; c < status.num_items; c++)
+                       items_sold += status.status[c].times_sold;
+       } else
+               memset(&status, 0, sizeof(struct status_array_t));
 }
 
 void load_credits() {
-       if (files_existing)
+       if (credits_exists)
                cbm_load("credits", (BYTE)8, &credits);
+       else
+               memset(&credits, 0, sizeof(struct credits_array_t));
 }
 
 void save_items() {
-       if (files_existing)
+       if (items_exists)
                _sysremove("items");
        cbm_save("items", (BYTE)8, &status, sizeof(struct status_array_t));
-       files_existing = true;
+       items_exists = true;
 }
 
 void save_credits() {
-       if (files_existing)
+       if (credits_exists)
                _sysremove("credits");
        cbm_save("credits", (BYTE)8, &credits, sizeof(struct credits_array_t));
-       files_existing = true;
+       credits_exists = true;
 }
 
 void load_config() {
-       files_existing = lookup_needed_files();
+       lookup_needed_files();
 }