/*
- */
+ * Core OCR algorithm (first exact bitmap match)
+ */
+/*
+ * This is part of ypp-sc-tools, a set of third-party tools for assisting
+ * players of Yohoho Puzzle Pirates.
+ *
+ * Copyright (C) 2009 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Yohoho and Puzzle Pirates are probably trademarks of Three Rings and
+ * are used without permission. This program is not endorsed or
+ * sponsored by Three Rings.
+ */
#include "ocr.h"
"Upper",
"Digit"
};
+struct OcrCellTypeInfo {
+ /* bitmaps of indices into context_names: */
+ unsigned initial, nextword, midword;
+ int space_spaces;
+ const char *name;
+};
+const struct OcrCellTypeInfo ocr_celltype_number= {
+ 4,4,4,
+ .space_spaces= 5,
+ .name= "number"
+};
+const struct OcrCellTypeInfo ocr_celltype_text= {
+ .initial=2, /* Uppercase */
+ .nextword=3, /* Either */
+ .midword=1, /* Lower only */
+ .space_spaces= 4,
+ .name= "text"
+};
-#define NCONTEXTS (sizeof(context_names)/sizeof(context_names[0]))
-#define SPACE_SPACES 4
+#define NCONTEXTS (sizeof(context_names)/sizeof(context_names[0]))
struct OcrReader {
int h;
int aresults, nresults;
};
-static FILE *resolver;
-static pid_t resolver_pid;
-static int resolver_done;
-
DEBUG_DEFINE_DEBUGF(ocr)
-#define dbassert(x) \
- ((x) ? (void)0 : \
- fatal("Error in character set database.\n" \
- " Requirement not met: %s:%d: %s", __FILE__,__LINE__, #x))
-
-static void fgetsline(FILE *f, char *lbuf, size_t lbufsz) {
- errno=0;
- char *s= fgets(lbuf,lbufsz,f);
- sysassert(!ferror(f));
- dbassert(!feof(f));
- assert(s);
- int l= strlen(lbuf);
- dbassert(l>0); dbassert(lbuf[--l]='\n');
- lbuf[l]= 0;
-}
-#define FGETSLINE(f,buf) (fgetsline(f,buf,sizeof(buf)))
+#define FGETSLINE (dbfile_getsline(lbuf,sizeof(lbuf),__FILE__,__LINE__))
static void cleardb_node(DatabaseNode *n) {
int i;
DatabaseNode *current, *additional;
char chrs[MAXGLYPHCHRS+1];
Pixcol cv;
- int r,j,ctxi;
+ int j,ctxi;
int h, endsword;
char lbuf[100];
- FILE *db;
for (ctxi=0; ctxi<NCONTEXTS; ctxi++)
cleardb_node(&rd->contexts[ctxi]);
asprintf(&dbfname,"%s/charset-%d.txt",get_vardir(),rd->h);
sysassert(dbfname);
- db= fopen(dbfname,"r");
- free(dbfname);
- if (!db) {
- sysassert(errno==ENOENT);
- return;
- }
+ if (!dbfile_open(dbfname))
+ goto x;
- FGETSLINE(db,lbuf);
+ FGETSLINE;
dbassert(!strcmp(lbuf,"# ypp-sc-tools pctb font v1"));
- r= fscanf(db, "%d", &h);
- dbassert(r==1);
+ dbassert( dbfile_scanf("%d", &h) == 1);
dbassert(h==rd->h);
for (;;) {
- FGETSLINE(db,lbuf);
- if (!lbuf || lbuf[0]=='#') continue;
+ FGETSLINE;
+ if (!lbuf[0] || lbuf[0]=='#') continue;
if (!strcmp(lbuf,".")) break;
for (ctxi=0; ctxi<NCONTEXTS; ctxi++)
if (!strcmp(lbuf,context_names[ctxi]))
goto found_ctx;
/* not found, just skip */
- for (;;) { FGETSLINE(db,lbuf); if (!lbuf[0]) break; }
+ for (;;) { FGETSLINE; if (!lbuf[0]) break; }
continue;
found_ctx:
for (nchrs=0;;) {
- int c= fgetc(db); sysassert(!ferror(db)); dbassert(c!=EOF);
+ int c= fgetc(dbfile); sysassert(!ferror(dbfile)); dbassert(c!=EOF);
if (c=='\n') { dbassert(nchrs); break; }
dbassert(nchrs<MAXGLYPHCHRS);
if (c=='\\') {
unsigned cr;
- c= fgetc(db); sysassert(!ferror(db)); dbassert(c=='x');
- r= fscanf(db, "%2x", &cr); sysassert(!ferror(db)); dbassert(r==1);
+ c= fgetc(dbfile); sysassert(!ferror(dbfile)); dbassert(c=='x');
+ dbassert( dbfile_scanf("%2x", &cr) == 1);
assert(cr>0 && cr<=255);
c= cr;
}
current= &rd->contexts[ctxi];
for (;;) {
- FGETSLINE(db,lbuf);
+ FGETSLINE;
if (!lbuf[0]) { dbassert(current != &rd->contexts[ctxi]); break; }
char *ep;
cv= strtoul(lbuf,&ep,16); dbassert(!*ep);
strcpy(current->s, chrs);
current->endsword= endsword;
}
- sysassert(!ferror(db));
- sysassert(!fclose(db));
+ x:
+ dbfile_close();
+ free(dbfname);
}
-static void cu_pr_ctxmap(unsigned ctxmap) {
+static void cu_pr_ctxmap(FILE *resolver, unsigned ctxmap) {
fprintf(resolver,"{");
const char *spc="";
int ctxi;
static void callout_unknown(OcrReader *rd, int w, Pixcol cols[],
int unk_l, int unk_r, unsigned unk_ctxmap) {
- int jobpipe[2],donepipe[2], c,i, x,y;
+ int c,i, x,y;
const OcrResultGlyph *s;
const char *p;
- char cb;
Pixcol pv;
+
+ FILE *resolver= resolve_start();
+ if (!resolver)
+ fatal("OCR failed - unrecognised characters or ligatures.\n"
+ "Character set database needs to be updated or augmented.\n"
+ "See README.charset.\n");
- if (!resolver) {
- sysassert(! pipe(jobpipe) );
- sysassert(! pipe(donepipe) );
- resolver_pid= fork();
- sysassert(resolver_pid!=-1);
- if (!resolver_pid) {
- sysassert( dup2(jobpipe[0],0) ==0 );
- sysassert(! close(jobpipe[1]) );
- sysassert(! close(donepipe[0]) );
- /* we know donepipe[1] is >= 4 and we have dealt with all the others
- * so we aren't in any danger of overwriting some other fd 4: */
- sysassert( dup2(donepipe[1],4) ==4 );
- execlp("./show-thing.tcl", "./show-thing.tcl",
- DEBUGP(callout) ? "--debug" : "--noop-arg",
- "--automatic-1",
- (char*)0);
- sysassert(!"execlp failed");
- }
- sysassert(! close(jobpipe[0]) );
- sysassert(! close(donepipe[1]) );
- resolver= fdopen(jobpipe[1],"w"); sysassert(resolver);
- resolver_done= donepipe[0];
- }
- fprintf(resolver,"%d %d ",unk_l,unk_r);
- cu_pr_ctxmap(unk_ctxmap);
+ fprintf(resolver,
+ "char\n"
+ "%d %d ",unk_l,unk_r);
+ cu_pr_ctxmap(resolver,unk_ctxmap);
for (i=0, s=rd->results; i<rd->nresults; i++, s++) {
if (!strcmp(s->s," ")) continue;
fprintf(resolver," %d %d ",s->l,s->r);
- cu_pr_ctxmap(s->ctxmap);
+ cu_pr_ctxmap(resolver,s->ctxmap);
fprintf(resolver," ");
for (p=s->s; (c= *p); p++) {
if (c=='\\') fprintf(resolver,"\\%c",c);
fputs("\",\n",resolver);
}
fputs("};\n",resolver);
- sysassert(!ferror(resolver));
- sysassert(!fflush(resolver));
-
- sysassert(resolver);
-
- int r;
- for (;;) {
- r= read(resolver_done,&cb,1);
- if (r==-1) { sysassert(errno==EINTR); continue; }
- break;
- }
-
- if (r==0) {
- pid_t pid;
- int st;
- for (;;) {
- pid= waitpid(resolver_pid, &st, 0);
- if (pid==-1) { sysassert(errno==EINTR); continue; }
- break;
- }
- sysassert(pid==resolver_pid);
- if (WIFEXITED(st)) {
- if (WEXITSTATUS(st))
- fatal("character resolver failed with nonzero exit status %d",
- WEXITSTATUS(st));
- fclose(resolver);
- close(resolver_done);
- resolver= 0;
- } else if (WIFSIGNALED(st)) {
- fatal("character resolver died due to signal %s%s",
- strsignal(WTERMSIG(st)), WCOREDUMP(st)?" (core dumped)":"");
- } else {
- fatal("character resolver gave strange wait status %d",st);
- }
- } else {
- assert(r==1);
- sysassert(cb==0);
- }
+ resolve_finish();
readdb(rd);
}
rd->nresults++;
}
-struct OcrCellTypeInfo {
- unsigned initial, nextword, midword;
- const char *name;
-};
-const struct OcrCellTypeInfo ocr_celltype_number= {
- 4,4,4,
- .name= "number"
-};
-const struct OcrCellTypeInfo ocr_celltype_text= {
- .initial=2, /* Uppercase */
- .nextword=3, /* Either */
- .midword=1, /* Lower only */
- .name= "text"
-};
const char *ocr_celltype_name(OcrCellType ct) { return ct->name; }
if (!cols[x]) {
nspaces++;
x++;
- if (nspaces==SPACE_SPACES) {
+ if (nspaces == ct->space_spaces) {
debugf("OCR x=%x nspaces=%d space\n",x,nspaces);
ctxmap= ct->nextword;
}
}
/* something here, so we need to add the spaces */
- if (nspaces>=SPACE_SPACES)
+ if (nspaces >= ct->space_spaces)
add_result(rd," ",x-nspaces,x+1,0);
nspaces=0;
if (uniquematch->s[0]) ctxmap= ct->midword;
else debugf(" (empty)");
if (uniquematch->endsword) {
- nspaces= SPACE_SPACES;
+ nspaces= ct->space_spaces;
debugf("_");
ctxmap= ct->nextword;
}
~yarrgweb / ypp-sc-tools.db-test.git / blobdiff