/*
- */
+ * 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"
+#include "convert.h"
typedef struct {
Pixcol col;
- struct OCRDatabaseNode *then;
-} OCRDatabaseLink;
-
-#define MAXGLYPHCHRS 3
+ struct DatabaseNode *then;
+} DatabaseLink;
-typedef struct OCRDatabaseNode {
- char s[MAXGLYPHCHRS+1]; /* null-terminated; "" means no match here */
+typedef struct DatabaseNode {
+ char *str;
int nlinks, alinks;
- OCRDatabaseLink *links;
-} OCRDatabaseNode;
+ unsigned match:1, defined:1, endsword:1, local:1;
+ DatabaseLink *links;
+} DatabaseNode;
-#define N_OCR_CONTEXTS 2
+typedef struct {
+ OcrReader *rd;
+ OcrCellType ct;
+ int w;
+ const Pixcol *cols;
+ int x;
+ unsigned ctxmap;
+} FindCharArgs;
+typedef struct {
+ DatabaseNode *match;
+ int rx;
+} FindCharResults;
+
+#define FOR_EACH_CONTEXT(EACH) \
+ EACH(Word) \
+ EACH(Lower) \
+ EACH(Upper) \
+ EACH(Digit)
+
+#define FEC_ENUM(Context) ct_##Context,
+#define FEC_BIT(Context) ctf_##Context = 1 << ct_##Context,
+enum {
+ FOR_EACH_CONTEXT(FEC_ENUM)
+ FOR_EACH_CONTEXT(FEC_BIT)
+};
+
+#define FEC_STRINGS(Context) #Context,
+static const char *context_names[]= { FOR_EACH_CONTEXT(FEC_STRINGS) };
+
+struct OcrCellTypeInfo {
+ /* bitmaps of indices into context_names: */
+ unsigned initial, nextword, midword;
+ int space_spaces;
+ const char *name;
+ int (*findchar_select)(const FindCharArgs *fca,
+ const FindCharResults results[]);
+};
+
+#define NCONTEXTS (sizeof(context_names)/sizeof(context_names[0]))
+
+struct OcrReader {
+ int h;
+ DatabaseNode contexts[NCONTEXTS];
+ char *result;
+ int lresult, aresult;
+ OcrResultGlyph *results;
+ int aresults, nresults;
+};
+
+DEBUG_DEFINE_DEBUGF(ocr)
+
+#define FGETSLINE (dbfile_getsline(lbuf,sizeof(lbuf),__FILE__,__LINE__))
+
+static void cleardb_node(DatabaseNode *n) {
+ int i;
+ free(n->str); n->str=0;
+ n->defined=n->match=n->endsword= 0;
+ for (i=0; i<n->nlinks; i++)
+ cleardb_node(n->links[i].then);
+}
+
+static void readdb1(OcrReader *rd, const char *which, int local);
-static OCRDatabaseNode ocr_contexts[N_OCR_CONTEXTS];
-static FILE *db;
-static OcrResultGlyph *results;
-static int aresults, nresults;
+static void readdb(OcrReader *rd) {
+ int ctxi;
+
+ for (ctxi=0; ctxi<NCONTEXTS; ctxi++)
+ cleardb_node(&rd->contexts[ctxi]);
-static FILE *resolver;
-static pid_t resolver_pid;
-static int resolver_done;
+ readdb1(rd, "master", 0);
+ readdb1(rd, "local", 1);
+}
-static void ocr_readdb(void) {
- int ctx,nchrs;
- OCRDatabaseNode *current, *additional;
- char chrs[MAXGLYPHCHRS+1];
+static void readdb1(OcrReader *rd, const char *which, int local) {
+ int nchrs;
+ DatabaseNode *current, *additional;
+ char chrs[100];
Pixcol cv;
- int r,i,j;
+ int j,ctxi;
+ int h, endsword;
+ char lbuf[100];
+
+ char *dbfname= masprintf("%s/#%s-char%d#.txt",
+ get_vardir(), which, rd->h);
+
+ if (!dbfile_open(dbfname))
+ goto x;
+
+ if (local)
+ o_flags |= ff_charset_havelocal;
- assert(!db);
- db= fopen("database","r"); eassert(db);
+ FGETSLINE;
+ dbassert(!strcmp(lbuf,"# ypp-sc-tools pctb font v3 depth=" STRING(AADEPTH)));
+
+ dbassert( dbfile_scanf("%d", &h) == 1);
+ dbassert(h==rd->h);
for (;;) {
- r= fscanf(db, "%d %d", &ctx, &nchrs);
- if (r==EOF) break;
- eassert(r==2);
- eassert(ctx>=0 && ctx<N_OCR_CONTEXTS);
- eassert(nchrs>0 && nchrs<=MAXGLYPHCHRS);
-
- for (i=0; i<nchrs; i++) {
- int c;
- r= fscanf(db, "%x", &c); eassert(r==1);
- eassert(c>0 && c<=255);
- chrs[i]= c;
+ 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; if (!lbuf[0]) break; }
+ continue;
+
+ found_ctx:
+ for (nchrs=0;;) {
+ int c= fgetc(dbfile); sysassert(!ferror(dbfile)); dbassert(c!=EOF);
+ if (c=='\n') break; /* forces no match */
+ dbassert(nchrs<sizeof(chrs));
+ chrs[nchrs++]= c;
+ }
+ endsword= 0;
+ if (nchrs>0 && chrs[nchrs-1]==' ') {
+ endsword= 1;
+ nchrs--;
}
- chrs[nchrs]= 0;
- int twidth;
- r= fscanf(db, "%d", &twidth); eassert(r==1);
- current= &ocr_contexts[ctx];
- for (i=0; i<twidth; i++) {
- r= fscanf(db, "%"PSPIXCOL(SCNx), &cv); eassert(r==1);
+ current= &rd->contexts[ctxi];
+ for (;;) {
+ FGETSLINE;
+ if (!lbuf[0]) { dbassert(current != &rd->contexts[ctxi]); break; }
+ dbassert( strlen(lbuf) == rd->h );
+ FILLZERO(cv);
+ int y;
+ for (y=0; y<h; y++) {
+ char pb[2];
+ pb[0]= lbuf[y];
+ pb[1]= 0;
+ char *ep;
+ unsigned pv= strtoul(pb,&ep,16); dbassert(!*ep);
+ pixcol_p_add(&cv, y, pv);
+ }
+
for (j=0; j<current->nlinks; j++)
- if (current->links[j].col == cv) {
+ if (!pixcol_cmp(&cv, ¤t->links[j].col)) {
current= current->links[j].then;
goto found_link;
}
- additional= malloc(sizeof(*additional)); eassert(additional);
- additional->s[0]= 0;
+ additional= mmalloc(sizeof(*additional));
+ additional->str= 0;
+ additional->defined= 0;
+ additional->match= 0;
+ additional->endsword= 0;
additional->nlinks= additional->alinks= 0;
additional->links= 0;
if (current->nlinks==current->alinks) {
current->alinks++;
current->alinks<<=1;
- current->links= realloc(current->links,
- sizeof(*current->links) * current->alinks);
- eassert(current->links);
+ current->links= mrealloc(current->links,
+ sizeof(*current->links) * current->alinks);
}
current->links[current->nlinks].col= cv;
current->links[current->nlinks].then= additional;
found_link:;
}
- eassert(!current->s[0]);
- strcpy(current->s, chrs);
+ if (!current->defined) {
+ free(current->str);
+ current->str= 0;
+ current->defined= 1;
+ current->match= 0;
+ current->local= local;
+
+ if (nchrs) {
+ current->str= mmalloc(nchrs+1);
+ memcpy(current->str, chrs, nchrs);
+ current->str[nchrs]= 0;
+ current->match= 1;
+ current->endsword= endsword;
+ }
+ }
}
- eassert(!ferror(db));
- eassert(feof(db));
-}
-
-static void callout_unknown(int w, int h, Pixcol cols[],
- int unk_l, int unk_r, int unk_ctx,
- const OcrResultGlyph *sofar, int nsofar) {
- int jobpipe[2],donepipe[2], c, r,i, x,y;
- const OcrResultGlyph *s;
- const char *p;
- char cb;
- Pixcol pv;
+ x:
+ dbfile_close();
+ free(dbfname);
+}
+
+typedef struct Rejection Rejection;
+struct Rejection {
+ struct Rejection *next;
+ const char *fname;
+ int lno;
+ pcre *re;
+};
+
+Rejection *rejections;
+
+static void load_rejections(const char *which) {
+ char lbuf[1000];
+ char *fname= masprintf("%s/#%s-reject#.txt", get_vardir(), which);
+ int c, lno=0;
+ Rejection *rej;
- if (!resolver) {
- r= pipe(jobpipe); eassert(!r);
- r= pipe(donepipe); eassert(!r);
- resolver_pid= fork();
- eassert(resolver_pid!=-1);
- if (!resolver_pid) {
- r= dup2(jobpipe[0],0); eassert(r==0);
- r= close(jobpipe[1]); eassert(!r);
- r= close(donepipe[0]); eassert(!r);
- /* 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: */
- r= dup2(donepipe[1],4); eassert(r==4);
- execlp("./show-thing.tcl", "./show-thing.tcl",
- "--automatic","1",(char*)0);
- eassert(!"execlp failed");
+ if (!dbfile_open(fname)) { free(fname); return; }
+
+ while ((c= fgetc(dbfile))!=EOF) {
+ ungetc(c,dbfile);
+ lno++;
+ dbfile_getsline(lbuf,sizeof(lbuf),fname,lno);
+
+ if (!lbuf[0] || isspace(lbuf[0] || lbuf[0]=='#'))
+ continue;
+
+ rej= mmalloc(sizeof(*rej));
+ rej->next= rejections;
+ rej->fname= fname;
+ rej->lno= lno;
+
+ const char *err;
+ int erroffset;
+ rej->re= pcre_compile(lbuf, PCRE_NO_AUTO_CAPTURE|PCRE_UTF8,
+ &err, &erroffset, 0);
+ if (!rej->re) {
+ char *what= masprintf("invalid regexp at offset %d: %s\n",
+ erroffset, err);
+ dbfile_assertfail(fname, lno, what);
}
- r= close(jobpipe[0]); eassert(!r);
- r= close(donepipe[1]); eassert(!r);
- resolver= fdopen(jobpipe[1],"w"); eassert(resolver);
- resolver_done= donepipe[0];
+ debugf("OCR LOADED REJECTION %s:%d `%s' %p\n", fname,lno, lbuf, rej->re);
+
+ rejections= rej;
+ }
+ sysassert(feof(dbfile));
+ dbfile_close();
+}
+
+static int should_reject(OcrReader *rd) {
+ static int rejections_loaded;
+ int ovector[30];
+
+ if (!rejections_loaded) {
+ fetch_with_rsync("reject");
+ load_rejections("master");
+ load_rejections("local");
+ rejections_loaded=1;
+ }
+
+ debugf("[OCR REJECTION `%s'%d", rd->result, rd->lresult);
+ Rejection *rej;
+ for (rej=rejections; rej; rej=rej->next) {
+ debugf(" (%p)", rej);
+
+ int res= pcre_exec(rej->re, 0, rd->result,rd->lresult, 0,
+ 0, ovector, ARRAYSIZE(ovector));
+ if (res==PCRE_ERROR_NOMATCH) continue;
+ sysassert(res>0);
+
+ debugf(" MATCH]\n");
+ fprintf(stderr,"Rejecting OCR result `%s' (due to %s:%d)\n",
+ rd->result, rej->fname,rej->lno);
+ return 1;
+ }
+ debugf(" OK]");
+ return 0;
+}
+
+static void cu_pr_ctxmap(FILE *resolver, unsigned ctxmap) {
+ fprintf(resolver,"{");
+ const char *spc="";
+ int ctxi;
+ for (ctxi=0; ctxi<NCONTEXTS; ctxi++) {
+ if (!(ctxmap & (1u << ctxi))) continue;
+ fprintf(resolver,"%s%s",spc,context_names[ctxi]);
+ spc=" ";
}
- fprintf(resolver,"%d %d %d",unk_l,unk_r,unk_ctx);
- for (i=0, s=sofar; i<nsofar; i++, s++) {
+ fprintf(resolver,"}");
+}
+
+static void callout_unknown(OcrReader *rd, int w, const Pixcol cols[],
+ int unk_l, int unk_r, unsigned unk_ctxmap) {
+ int c,i, x,y;
+ const OcrResultGlyph *s;
+ const char *p;
+
+ FILE *resolver= resolve_start();
+ if (!resolver ||
+ !((o_flags & ff_charset_edit) ||
+ ((o_flags & ff_charset_allowedit) &&
+ (o_flags & ff_charset_havelocal))))
+ fatal("OCR failed - unrecognised characters or ligatures.\n"
+ "Character set database needs to be updated or augmented.\n"
+ "See README.charset.\n");
+
+ 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 %d ",s->l,s->r,s->ctx);
+ fprintf(resolver," %d %d ",s->l,s->r);
+ cu_pr_ctxmap(resolver, 1u << s->match);
+ fprintf(resolver," ");
+ cu_pr_ctxmap(resolver, s->ctxmap);
+ fprintf(resolver," ");
for (p=s->s; (c= *p); p++) {
if (c=='\\') fprintf(resolver,"\\%c",c);
else if (c>=33 && c<=126) fputc(c,resolver);
fputc('\n',resolver);
fprintf(resolver,
- "/* XPM */\n"
- "static char *t[] = {\n"
- "/* columns rows colors chars-per-pixel */\n"
- "\"%d %d 2 1\",\n"
- "\" c black\",\n"
- "\"o c white\",\n",
- w,h);
- for (y=0, pv=1; y<h; y++, pv<<=1) {
- fputc('"',resolver);
+ "P2\n%d %d %d\n", w, rd->h, AAMAXVAL);
+ for (y=0; y<rd->h; y++) {
for (x=0; x<w; x++)
- fputc(cols[x] & pv ? 'o' : ' ', resolver);
- fputs("\",\n",resolver);
+ fprintf(resolver, " %d", pixcol_p_get(&cols[x], y));
+ fputc('\n',resolver);
}
- fputs("};\n",resolver);
- eassert(!ferror(resolver));
- eassert(!fflush(resolver));
- eassert(resolver);
+ resolve_finish();
+ readdb(rd);
+}
+
+static void add_result(OcrReader *rd, const char *s, int l, int r,
+ int match, unsigned ctxmap) {
+ if (rd->nresults >= rd->aresults) {
+ rd->aresults++; rd->aresults<<=1;
+ rd->results= mrealloc(rd->results, sizeof(*rd->results)*rd->aresults);
+ }
+ rd->results[rd->nresults].s= s;
+ rd->results[rd->nresults].l= l;
+ rd->results[rd->nresults].r= r;
+ rd->results[rd->nresults].match= match;
+ rd->results[rd->nresults].ctxmap= ctxmap;
+ rd->nresults++;
+
+ if (!s) return; /* just the sentinel for the caller */
+
+ int sl= strlen(s);
+ int newlresult= rd->lresult + sl;
+ if (newlresult >= rd->aresult) {
+ rd->aresult= (newlresult << 1) + 1;
+ rd->result= mrealloc(rd->result, rd->aresult);
+ }
+ memcpy(rd->result + rd->lresult, s, sl);
+ rd->lresult= newlresult;
+ rd->result[rd->lresult]= 0;
+}
+
+
+static DatabaseNode *findchar_1ctx(const FindCharArgs *fca,
+ DatabaseNode *start, int *matchx_r) {
+ DatabaseNode *current= start;
+ DatabaseNode *bestmatch= 0;
+ int i;
+ int x= fca->x;
for (;;) {
- r= read(resolver_done,&cb,1);
- if (r==-1) { eassert(errno==EINTR); continue; }
+ debug_flush();
+ debugf(" | x=%d",x);
+ if (x > fca->w) break;
+ Pixcol cv= fca->cols[x];
+ debugf(" cv="PIXCOL_PRFMT, PIXCOL_PRVAL(cv));
+ for (i=0; i<current->nlinks; i++)
+ if (!pixcol_cmp(&cv, ¤t->links[i].col))
+ goto found;
+ /* not found */
+ debugf(" ?");
break;
- }
- if (r==0) {
- pid_t pid;
- for (;;) {
- pid= waitpid(resolver_pid, &r, 0);
- if (pid==-1) { eassert(errno==EINTR); continue; }
- break;
- }
- eassert(pid==resolver_pid);
- if (WIFEXITED(r)) {
- eassert(!WEXITSTATUS(r));
- fclose(resolver);
- close(resolver_done);
- resolver= 0;
- } else if (WIFSIGNALED(r)) {
- eassert(!"resolver child died due to signal");
+ found:
+ current= current->links[i].then;
+ if (current->match) {
+ debugf(" \"%s\"%s",current->str,current->endsword?"_":"");
+ bestmatch= current;
+ *matchx_r= x;
} else {
- eassert(!"weird wait status");
+ debugf(" ...");
}
+
+ x++;
+ }
+ return bestmatch;
+}
+
+static DatabaseNode *findchar(const FindCharArgs *fca,
+ int *match_rx, int *match_rctxi) {
+ FindCharResults results[NCONTEXTS];
+ int ctxi, match=-1, nmatches=0;
+
+ debugf("OCR lx=%d ct_state=%x ", fca->x, fca->ctxmap);
+ for (ctxi=0; ctxi<NCONTEXTS; ctxi++) {
+ results[ctxi].match= 0;
+ if (!(fca->ctxmap & (1u << ctxi))) continue;
+ debugf(" || %s",context_names[ctxi]);
+
+ results[ctxi].match= findchar_1ctx(fca, &fca->rd->contexts[ctxi],
+ &results[ctxi].rx);
+ if (!results[ctxi].match) continue;
+
+ match= ctxi;
+ nmatches++;
+ }
+ if (nmatches==1) {
+ debugf(" unique");
} else {
- eassert(r==1);
- eassert(cb==0);
+ debugf(" ambiguous");
+ match= !fca->ct->findchar_select ? -1 :
+ fca->ct->findchar_select(fca,results);
+ debugf(" resolved %s", match<0 ? "<none>" : context_names[match]);
}
-
- fclose(db);
- db= 0;
- ocr_readdb();
+ if (match<0)
+ return 0;
+
+ *match_rx= results[match].rx;
+ if (match_rctxi) *match_rctxi= match;
+ return results[match].match;
}
-static void add_result(const char *s, int l, int r, int ctx) {
- if (nresults >= aresults) {
- aresults++; aresults<<=1;
- results= realloc(results,sizeof(*results)*aresults);
- eassert(results);
+static int findchar_select_text(const FindCharArgs *fca,
+ const FindCharResults results[]) {
+
+ dbassert(! results[ct_Digit].match ); /* digits are supposedly unambiguous */
+
+ switch (fca->ctxmap) {
+
+#define RETURN_IF_LONGER(this,that) do{ \
+ if (results[ct_##this].rx > results[ct_##that].rx) \
+ return ct_##this; \
+ }while(0)
+
+ case ctf_Digit | ctf_Upper | ctf_Lower | ctf_Word:
+ /* Start of word. Prefer Word match; failing that, take the longest */
+ if (results[ct_Word].match) return ct_Word;
+ RETURN_IF_LONGER(Lower,Upper);
+ RETURN_IF_LONGER(Upper,Lower);
+ break;
+
+ case ctf_Digit | ctf_Upper | ctf_Lower:
+ /* Mid-word. Prefer longer match; failing that, match lower. */
+ RETURN_IF_LONGER(Upper,Lower);
+ return ct_Lower;
}
- results[nresults].s= s;
- results[nresults].l= l;
- results[nresults].r= r;
- results[nresults].ctx= ctx;
- nresults++;
+
+ /* oh well */
+ return -1;
}
-OcrResultGlyph *ocr(int w, int h, Pixcol cols[]) {
- int nspaces=-w;
- int ctx=1,i, x;
+const struct OcrCellTypeInfo ocr_celltype_number= {
+ ctf_Digit, ctf_Digit, ctf_Digit,
+ .space_spaces= 5,
+ .name= "number",
+ .findchar_select= 0
+};
+const struct OcrCellTypeInfo ocr_celltype_text= {
+ .initial= ctf_Digit | ctf_Upper,
+ .nextword= ctf_Digit | ctf_Upper | ctf_Lower | ctf_Word,
+ .midword= ctf_Digit | ctf_Upper | ctf_Lower,
+ .space_spaces= 4,
+ .name= "text",
+ .findchar_select= findchar_select_text
+};
+
+
+const char *ocr_celltype_name(OcrCellType ct) { return ct->name; }
+
+OcrResultGlyph *ocr(OcrReader *rd, OcrCellType ct, int w,
+ const Pixcol cols[]) {
+ int nspaces;
+ int x;
+
+ FindCharArgs fca;
+ fca.rd= rd;
+ fca.ct= ct;
+ fca.w= w;
+ fca.cols= cols;
+ fca.x= -1;
- nresults=0;
- assert(db);
+ restart:
- fprintf(debug,"OCR h=%d w=%d",w,h);
- for (x=0; x<w; x++) fprintf(debug," %"PSPIXCOL(PRIx),cols[x]);
- fprintf(debug,"\n");
+ nspaces=- w;
+ fca.ctxmap= ct->initial;
+ rd->nresults=0;
+ rd->lresult=0;
+ rd->result[0]=0;
+ debugf("OCR h=%d w=%d",rd->h,w);
+ for (x=0; x<w; x++) debugf(" "PIXCOL_PRFMT, PIXCOL_PRVAL(cols[x]));
+ debugf("\n");
debug_flush();
- restart:
x=0;
for (;;) {
debug_flush();
if (x>=w)
break;
- if (!cols[x]) {
+ if (!pixcol_nonzero(&cols[x])) {
nspaces++;
x++;
- if (nspaces==3) {
- fprintf(debug,"OCR x=%x nspaces=%d space\n",x,nspaces);
- add_result(" ",x-nspaces,x+1,0);
- ctx=1;
+ if (nspaces == ct->space_spaces) {
+ debugf("OCR x=%x nspaces=%d space\n",x,nspaces);
+ fca.ctxmap= ct->nextword;
}
continue;
}
- nspaces=0;
- /* find character */
- OCRDatabaseNode *current=0, *bestmatch=0;
- int lx=x;
- int bestmatch_rx=-1;
- current= &ocr_contexts[ctx];
- fprintf(debug,"OCR lx=%d ctx=%d ",lx,ctx);
-
- for (;;) {
- debug_flush();
- fprintf(debug,"| x=%d",x);
- if (x>w) break;
- Pixcol cv= cols[x];
- fprintf(debug," cv=%"PSPIXCOL(PRIx),x);
- for (i=0; i<current->nlinks; i++)
- if (current->links[i].col == cv)
- goto found;
- /* not found */
- fprintf(debug," ?");
- break;
+ /* something here, so we need to add the spaces */
+ if (nspaces >= ct->space_spaces)
+ add_result(rd," ",x-nspaces,x+1,-1,0);
+ nspaces=0;
- found:
- current= current->links[i].then;
- if (current->s[0]) {
- fprintf(debug," \"%s\"",current->s);
- bestmatch=current; bestmatch_rx=x;
- } else {
- fprintf(debug," ...");
+ fca.x= x;
+
+ int match_rx=-1;
+ int match_ctxi=-1;
+ DatabaseNode *match= findchar(&fca, &match_rx, &match_ctxi);
+
+ if (match) {
+ debugf(" || YES");
+ add_result(rd, match->str, x, match_rx, match_ctxi, fca.ctxmap);
+ if (should_reject(rd)) {
+ callout_unknown(rd, w,cols, match_rx+1,match_rx, 0);
+ goto restart;
}
- x++;
- }
-
- if (bestmatch) {
- fprintf(debug," YES\n");
- add_result(bestmatch->s, lx, bestmatch_rx, ctx);
- x= bestmatch_rx+1;
- ctx= 0;
+ x= match_rx+1;
+ if (match->match) fca.ctxmap= ct->midword;
+ else debugf(" (empty)");
+ if (match->endsword) {
+ nspaces= ct->space_spaces;
+ debugf("_");
+ fca.ctxmap= ct->nextword;
+ }
+ debugf("\n");
} else {
int rx;
- fprintf(debug," UNKNOWN");
- for (rx=lx; rx<w && cols[rx]; rx++);
- fprintf(debug," x=%d ctx=%d %d..%d\n",x, ctx, lx,rx);
+ debugf(" || UNKNOWN");
+ for (rx=x; rx<w && pixcol_nonzero(&cols[rx]); rx++);
+ debugf(" x=%d ctxmap=%x %d..%d\n",x, fca.ctxmap, x,rx);
debug_flush();
- callout_unknown(w,h,cols, lx,rx-1,ctx, results,nresults);
+ callout_unknown(rd, w,cols, x,rx-1, fca.ctxmap);
goto restart;
}
+
}
- add_result(0,-1,-1,0);
- fprintf(debug,"OCR finished %d glyphs\n",nresults);
+ add_result(rd, 0,-1,-1,-1,0);
+ debugf("OCR finished %d glyphs\n",rd->nresults);
debug_flush();
- return results;
+ return rd->results;
+}
+
+OcrReader *ocr_init(int h) {
+ OcrReader *rd;
+
+ assert(h <= OCR_MAX_H);
+
+ if (o_flags & ff_dict_fetch) {
+ char *fetchfile= masprintf("char%d",h);
+ progress("Updating %s...",fetchfile);
+ fetch_with_rsync(fetchfile);
+ free(fetchfile);
+ }
+
+ rd= mmalloc(sizeof(*rd));
+ memset(rd,0,sizeof(*rd));
+
+ rd->h= h;
+
+ rd->aresult= 10;
+ rd->result= mmalloc(rd->aresult);
+
+ readdb(rd);
+ return rd;
+}
+
+/*---------- character set dump ----------*/
+
+static void show_recurse(const DatabaseNode *t, int *count,
+ const DatabaseNode **store_ary) {
+ if (t->defined) {
+ if (store_ary) store_ary[*count]= t;
+ (*count)++;
+ }
+ int l;
+ for (l=0; l<t->nlinks; l++)
+ show_recurse(t->links[l].then, count,store_ary);
+}
+
+static int show_char_compar(const void *av, const void *bv) {
+ const DatabaseNode *const *ap= av; const DatabaseNode *a= *ap;
+ const DatabaseNode *const *bp= bv; const DatabaseNode *b= *bp;
+ return strcmp(a->str, b->str) ?:
+ ((int)a->match - (int)b->match) ?:
+ ((int)a->endsword - (int)b->endsword) ?:
+ ((int)a->local - (int)b->local) ?:
+ 0;
}
-void ocr_init(void) {
- ocr_readdb();
+void ocr_showcharsets(void) {
+ DIR *d;
+ struct dirent *de;
+ char found[OCR_MAX_H];
+ pcre *fnpat;
+ int matchvec[10];
+ char hbuf[10];
+ const char *pcre_err;
+ int pcre_erroffset;
+
+ memset(found,0,sizeof(found));
+
+ fnpat= pcre_compile("\\#(?:master|local)\\-char([1-9]\\d{0,2})\\#\\.txt$",
+ PCRE_ANCHORED|PCRE_DOLLAR_ENDONLY,
+ &pcre_err,&pcre_erroffset, 0);
+ debugf("pcre_compile %p %s\n",fnpat,pcre_err);
+ assert(fnpat);
+
+ sysassert( d= opendir(get_vardir()) );
+ for (;;) {
+ errno=0; de= readdir(d); if (!de) break;
+
+ int rer= pcre_exec(fnpat,0, de->d_name,strlen(de->d_name), 0,0,
+ matchvec,ARRAYSIZE(matchvec));
+ debugf("pcre_exec `%s' => %d\n", de->d_name,rer);
+
+ if (rer==PCRE_ERROR_NOMATCH || rer==PCRE_ERROR_BADUTF8) continue;
+ assert(rer==2);
+
+ rer= pcre_copy_substring(de->d_name,matchvec,rer, 1, hbuf,sizeof(hbuf));
+ debugf("pcre_copy_substring => %d\n", rer);
+ assert(rer>0);
+
+ int h= atoi(hbuf);
+ if (h >= ARRAYSIZE(found)) continue;
+
+ found[h]= 1;
+ }
+
+ int h;
+ for (h=0; h<ARRAYSIZE(found); h++) {
+ if (!found[h]) continue;
+
+ OcrReader *rd= ocr_init(h); /* we leak this but never mind */
+ progress("");
+
+ int ctxi;
+ for (ctxi=0; ctxi<NCONTEXTS; ctxi++) {
+ int nchars= 0;
+ show_recurse(&rd->contexts[ctxi], &nchars, 0);
+ const DatabaseNode **chars= mmalloc(sizeof(*chars) * nchars);
+ int chari= 0;
+ show_recurse(&rd->contexts[ctxi], &chari, chars);
+ assert(chari==nchars);
+ qsort(chars, nchars, sizeof(*chars), show_char_compar);
+
+ int local;
+ for (local=0; local<2; local++) {
+ printf("%2d %-6s %-6s ", h, context_names[ctxi],
+ local?"local":"master");
+ for (chari=0; chari<nchars; chari++) {
+ const DatabaseNode *t= chars[chari];
+ static const char accept[]=
+ "abcdefghijklmnopqrstuvwxyz"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "0123456789" "'!&-+.,>";
+
+ if (t->local != local) continue;
+
+ if (!t->match)
+ printf(" [nomatch]");
+ else if (!t->endsword && strspn(t->str, accept) == strlen(t->str))
+ printf(" %s",t->str);
+ else {
+ printf(" \"");
+ char *p= t->str;
+ int c;
+ while ((c=*p++)) {
+ if (c=='"' || c=='\\') printf("\\%c",c);
+ else if (c>=' ' && c<=126) putchar(c);
+ else printf("\\x%02x", (unsigned char)c);
+ }
+ if (t->endsword) putchar(' ');
+ putchar('"');
+ }
+ }
+ putchar('\n');
+ }
+ free(chars);
+ }
+ }
}
~yarrgweb / ypp-sc-tools.db-live.git / blobdiff