portable documentation

[picodrive.git] / tools / textfilter.c

diff --git a/tools/textfilter.c b/tools/textfilter.c
new file mode 100644 (file)
index 0000000..7a58e80
--- /dev/null
+++ b/tools/textfilter.c
@@ -0,0 +1,114 @@
+#include <stdio.h>
+#include <string.h>
+
+
+static int check_defines(const char **defs, int defcount, char *tdef)
+{
+       int i, len;
+
+       len = strlen(tdef);
+       for (i = 0; i < len; i++)
+               if (tdef[i] == ' ' || tdef[i] == '\r' || tdef[i] == '\n') break;
+       tdef[i] = 0;
+
+       for (i = 0; i < defcount; i++)
+       {
+               if (strcmp(defs[i], tdef) == 0)
+                       return 1;
+       }
+
+       return 0;
+}
+
+
+static void do_counters(char *str)
+{
+       static int counters[4] = { 1, 1, 1, 1 };
+       char buff[1024];
+       int counter;
+       char *s = str;
+
+       while ((s = strstr(s, "@@")))
+       {
+               if (s[2] < '0' || s[2] > '3') { s++; continue; }
+
+               counter = s[2] - '0';
+               snprintf(buff, sizeof(buff), "%i%s", counters[counter]++, s + 3);
+               strcpy(s, buff);
+       }
+}
+
+
+int main(int argc, char *argv[])
+{
+       char buff[1024];
+       FILE *fi, *fo;
+       int skip_mode = 0, ifdef_level = 0, line = 0;
+
+       if (argc < 3)
+       {
+               printf("usage:\n%s <file_in> <file_out> [defines...]\n", argv[0]);
+               return 1;
+       }
+
+       fi = fopen(argv[1], "r");
+       if (fi == NULL)
+       {
+               printf("failed to open: %s\n", argv[1]);
+               return 2;
+       }
+
+       fo = fopen(argv[2], "w");
+       if (fo == NULL)
+       {
+               printf("failed to open: %s\n", argv[2]);
+               return 3;
+       }
+
+       for (++line; !feof(fi); line++)
+       {
+               char *fgs;
+
+               fgs = fgets(buff, sizeof(buff), fi);
+               if (fgs == NULL) break;
+
+               if (buff[0] == '#')
+               {
+                       /* control char */
+                       if (strncmp(buff, "#ifdef ", 7) == 0)
+                       {
+                               if (!check_defines((void *) &argv[3], argc-3, buff + 7)) skip_mode = 1;
+                               ifdef_level++;
+                       }
+                       else if (strncmp(buff, "#ifndef ", 8) == 0)
+                       {
+                               if ( check_defines((void *) &argv[3], argc-3, buff + 7)) skip_mode = 1;
+                               ifdef_level++;
+                       }
+                       else if (strncmp(buff, "#endif", 6) == 0)
+                       {
+                               ifdef_level--;
+                               if (ifdef_level == 0) skip_mode = 0;
+                               if (ifdef_level < 0)
+                               {
+                                       printf("%i: warning: #endif without #ifdef, ignoring\n", line);
+                                       ifdef_level = 0;
+                               }
+                       }
+
+                       /* skip line */
+                       continue;
+               }
+               if (!skip_mode)
+               {
+                       do_counters(buff);
+                       fputs(buff, fo);
+               }
+       }
+
+       fclose(fi);
+       fclose(fo);
+
+       return 0;
+}
+