/* $Id: buffer.c,v 1.30 2010/07/18 14:10:09 htrb Exp $ */ #include "fm.h" #ifdef USE_MOUSE #ifdef USE_GPM #include <gpm.h> #endif #if defined(USE_GPM) || defined(USE_SYSMOUSE) extern int do_getch(); #define getch() do_getch() #endif /* USE_GPM */ #endif /* USE_MOUSE */ #ifdef __EMX__ #include <sys/kbdscan.h> #include <strings.h> #endif char *NullLine = ""; Lineprop NullProp[] = { 0 }; /* * Buffer creation */ Buffer * newBuffer(int width) { Buffer *n; n = New(Buffer); if (n == NULL) return NULL; bzero((void *)n, sizeof(Buffer)); n->width = width; n->COLS = COLS; n->LINES = LASTLINE; n->currentURL.scheme = SCM_UNKNOWN; n->baseURL = NULL; n->baseTarget = NULL; n->buffername = ""; n->bufferprop = BP_NORMAL; n->clone = New(int); *n->clone = 1; n->trbyte = 0; #ifdef USE_SSL n->ssl_certificate = NULL; #endif #ifdef USE_M17N n->auto_detect = WcOption.auto_detect; #endif return n; } /* * Create null buffer */ Buffer * nullBuffer(void) { Buffer *b; b = newBuffer(COLS); b->buffername = "*Null*"; return b; } /* * clearBuffer: clear buffer content */ void clearBuffer(Buffer *buf) { buf->firstLine = buf->topLine = buf->currentLine = buf->lastLine = NULL; buf->allLine = 0; } /* * discardBuffer: free buffer structure */ void discardBuffer(Buffer *buf) { int i; Buffer *b; #ifdef USE_IMAGE deleteImage(buf); #endif clearBuffer(buf); for (i = 0; i < MAX_LB; i++) { b = buf->linkBuffer[i]; if (b == NULL) continue; b->linkBuffer[REV_LB[i]] = NULL; } if (buf->savecache) unlink(buf->savecache); if (--(*buf->clone)) return; if (buf->pagerSource) ISclose(buf->pagerSource); if (buf->sourcefile && (!buf->real_type || strncasecmp(buf->real_type, "image/", 6))) { if (buf->real_scheme != SCM_LOCAL || buf->bufferprop & BP_FRAME) unlink(buf->sourcefile); } if (buf->header_source) unlink(buf->header_source); if (buf->mailcap_source) unlink(buf->mailcap_source); while (buf->frameset) { deleteFrameSet(buf->frameset); buf->frameset = popFrameTree(&(buf->frameQ)); } } /* * namedBuffer: Select buffer which have specified name */ Buffer * namedBuffer(Buffer *first, char *name) { Buffer *buf; if (!strcmp(first->buffername, name)) { return first; } for (buf = first; buf->nextBuffer != NULL; buf = buf->nextBuffer) { if (!strcmp(buf->nextBuffer->buffername, name)) { return buf->nextBuffer; } } return NULL; } /* * deleteBuffer: delete buffer */ Buffer * deleteBuffer(Buffer *first, Buffer *delbuf) { Buffer *buf, *b; if (first == delbuf && first->nextBuffer != NULL) { buf = first->nextBuffer; discardBuffer(first); return buf; } if ((buf = prevBuffer(first, delbuf)) != NULL) { b = buf->nextBuffer; buf->nextBuffer = b->nextBuffer; discardBuffer(b); } return first; } /* * replaceBuffer: replace buffer */ Buffer * replaceBuffer(Buffer *first, Buffer *delbuf, Buffer *newbuf) { Buffer *buf; if (delbuf == NULL) { newbuf->nextBuffer = first; return newbuf; } if (first == delbuf) { newbuf->nextBuffer = delbuf->nextBuffer; discardBuffer(delbuf); return newbuf; } if (delbuf && (buf = prevBuffer(first, delbuf))) { buf->nextBuffer = newbuf; newbuf->nextBuffer = delbuf->nextBuffer; discardBuffer(delbuf); return first; } newbuf->nextBuffer = first; return newbuf; } Buffer * nthBuffer(Buffer *firstbuf, int n) { int i; Buffer *buf = firstbuf; if (n < 0) return firstbuf; for (i = 0; i < n; i++) { if (buf == NULL) return NULL; buf = buf->nextBuffer; } return buf; } static void writeBufferName(Buffer *buf, int n) { Str msg; int all; all = buf->allLine; if (all == 0 && buf->lastLine != NULL) all = buf->lastLine->linenumber; move(n, 0); /* FIXME: gettextize? */ msg = Sprintf("<%s> [%d lines]", buf->buffername, all); if (buf->filename != NULL) { switch (buf->currentURL.scheme) { case SCM_LOCAL: case SCM_LOCAL_CGI: if (strcmp(buf->currentURL.file, "-")) { Strcat_char(msg, ' '); Strcat_charp(msg, conv_from_system(buf->currentURL.real_file)); } break; case SCM_UNKNOWN: case SCM_MISSING: break; default: Strcat_char(msg, ' '); Strcat(msg, parsedURL2Str(&buf->currentURL)); break; } } addnstr_sup(msg->ptr, COLS - 1); } /* * gotoLine: go to line number */ void gotoLine(Buffer *buf, int n) { char msg[32]; Line *l = buf->firstLine; if (l == NULL) return; if (buf->pagerSource && !(buf->bufferprop & BP_CLOSE)) { if (buf->lastLine->linenumber < n) getNextPage(buf, n - buf->lastLine->linenumber); while ((buf->lastLine->linenumber < n) && (getNextPage(buf, 1) != NULL)) ; } if (l->linenumber > n) { /* FIXME: gettextize? */ sprintf(msg, "First line is #%ld", l->linenumber); set_delayed_message(msg); buf->topLine = buf->currentLine = l; return; } if (buf->lastLine->linenumber < n) { l = buf->lastLine; /* FIXME: gettextize? */ sprintf(msg, "Last line is #%ld", buf->lastLine->linenumber); set_delayed_message(msg); buf->currentLine = l; buf->topLine = lineSkip(buf, buf->currentLine, -(buf->LINES - 1), FALSE); return; } for (; l != NULL; l = l->next) { if (l->linenumber >= n) { buf->currentLine = l; if (n < buf->topLine->linenumber || buf->topLine->linenumber + buf->LINES <= n) buf->topLine = lineSkip(buf, l, -(buf->LINES + 1) / 2, FALSE); break; } } } /* * gotoRealLine: go to real line number */ void gotoRealLine(Buffer *buf, int n) { char msg[32]; Line *l = buf->firstLine; if (l == NULL) return; if (buf->pagerSource && !(buf->bufferprop & BP_CLOSE)) { if (buf->lastLine->real_linenumber < n) getNextPage(buf, n - buf->lastLine->real_linenumber); while ((buf->lastLine->real_linenumber < n) && (getNextPage(buf, 1) != NULL)) ; } if (l->real_linenumber > n) { /* FIXME: gettextize? */ sprintf(msg, "First line is #%ld", l->real_linenumber); set_delayed_message(msg); buf->topLine = buf->currentLine = l; return; } if (buf->lastLine->real_linenumber < n) { l = buf->lastLine; /* FIXME: gettextize? */ sprintf(msg, "Last line is #%ld", buf->lastLine->real_linenumber); set_delayed_message(msg); buf->currentLine = l; buf->topLine = lineSkip(buf, buf->currentLine, -(buf->LINES - 1), FALSE); return; } for (; l != NULL; l = l->next) { if (l->real_linenumber >= n) { buf->currentLine = l; if (n < buf->topLine->real_linenumber || buf->topLine->real_linenumber + buf->LINES <= n) buf->topLine = lineSkip(buf, l, -(buf->LINES + 1) / 2, FALSE); break; } } } static Buffer * listBuffer(Buffer *top, Buffer *current) { int i, c = 0; Buffer *buf = top; move(0, 0); #ifdef USE_COLOR if (useColor) { setfcolor(basic_color); #ifdef USE_BG_COLOR setbcolor(bg_color); #endif /* USE_BG_COLOR */ } #endif /* USE_COLOR */ clrtobotx(); for (i = 0; i < LASTLINE; i++) { if (buf == current) { c = i; standout(); } writeBufferName(buf, i); if (buf == current) { standend(); clrtoeolx(); move(i, 0); toggle_stand(); } else clrtoeolx(); if (buf->nextBuffer == NULL) { move(i + 1, 0); clrtobotx(); break; } buf = buf->nextBuffer; } standout(); /* FIXME: gettextize? */ message("Buffer selection mode: SPC for select / D for delete buffer", 0, 0); standend(); /* * move(LASTLINE, COLS - 1); */ move(c, 0); refresh(); return buf->nextBuffer; } /* * Select buffer visually */ Buffer * selectBuffer(Buffer *firstbuf, Buffer *currentbuf, char *selectchar) { int i, cpoint, /* Current Buffer Number */ spoint, /* Current Line on Screen */ maxbuf, sclimit = LASTLINE; /* Upper limit of line * number in * the * screen */ Buffer *buf, *topbuf; char c; i = cpoint = 0; for (buf = firstbuf; buf != NULL; buf = buf->nextBuffer) { if (buf == currentbuf) cpoint = i; i++; } maxbuf = i; if (cpoint >= sclimit) { spoint = sclimit / 2; topbuf = nthBuffer(firstbuf, cpoint - spoint); } else { topbuf = firstbuf; spoint = cpoint; } listBuffer(topbuf, currentbuf); for (;;) { if ((c = getch()) == ESC_CODE) { if ((c = getch()) == '[' || c == 'O') { switch (c = getch()) { case 'A': c = 'k'; break; case 'B': c = 'j'; break; case 'C': c = ' '; break; case 'D': c = 'B'; break; } } } #ifdef __EMX__ else if (!c) switch (getch()) { case K_UP: c = 'k'; break; case K_DOWN: c = 'j'; break; case K_RIGHT: c = ' '; break; case K_LEFT: c = 'B'; } #endif switch (c) { case CTRL_N: case 'j': if (spoint < sclimit - 1) { if (currentbuf->nextBuffer == NULL) continue; writeBufferName(currentbuf, spoint); currentbuf = currentbuf->nextBuffer; cpoint++; spoint++; standout(); writeBufferName(currentbuf, spoint); standend(); move(spoint, 0); toggle_stand(); } else if (cpoint < maxbuf - 1) { topbuf = currentbuf; currentbuf = currentbuf->nextBuffer; cpoint++; spoint = 1; listBuffer(topbuf, currentbuf); } break; case CTRL_P: case 'k': if (spoint > 0) { writeBufferName(currentbuf, spoint); currentbuf = nthBuffer(topbuf, --spoint); cpoint--; standout(); writeBufferName(currentbuf, spoint); standend(); move(spoint, 0); toggle_stand(); } else if (cpoint > 0) { i = cpoint - sclimit; if (i < 0) i = 0; cpoint--; spoint = cpoint - i; currentbuf = nthBuffer(firstbuf, cpoint); topbuf = nthBuffer(firstbuf, i); listBuffer(topbuf, currentbuf); } break; default: *selectchar = c; return currentbuf; } /* * move(LASTLINE, COLS - 1); */ move(spoint, 0); refresh(); } } /* * Reshape HTML buffer */ void reshapeBuffer(Buffer *buf) { URLFile f; Buffer sbuf; #ifdef USE_M17N wc_uint8 old_auto_detect = WcOption.auto_detect; #endif if (!buf->need_reshape) return; buf->need_reshape = FALSE; buf->width = INIT_BUFFER_WIDTH; if (buf->sourcefile == NULL) return; init_stream(&f, SCM_LOCAL, NULL); examineFile(buf->mailcap_source ? buf->mailcap_source : buf->sourcefile, &f); if (f.stream == NULL) return; copyBuffer(&sbuf, buf); clearBuffer(buf); while (buf->frameset) { deleteFrameSet(buf->frameset); buf->frameset = popFrameTree(&(buf->frameQ)); } buf->href = NULL; buf->name = NULL; buf->img = NULL; buf->formitem = NULL; buf->formlist = NULL; buf->linklist = NULL; buf->maplist = NULL; if (buf->hmarklist) buf->hmarklist->nmark = 0; if (buf->imarklist) buf->imarklist->nmark = 0; if (buf->header_source) { if (buf->currentURL.scheme != SCM_LOCAL || buf->mailcap_source || !strcmp(buf->currentURL.file, "-")) { URLFile h; init_stream(&h, SCM_LOCAL, NULL); examineFile(buf->header_source, &h); if (h.stream) { readHeader(&h, buf, TRUE, NULL); UFclose(&h); } } else if (buf->search_header) /* -m option */ readHeader(&f, buf, TRUE, NULL); } #ifdef USE_M17N WcOption.auto_detect = WC_OPT_DETECT_OFF; UseContentCharset = FALSE; #endif if (is_html_type(buf->type)) loadHTMLBuffer(&f, buf); else loadBuffer(&f, buf); UFclose(&f); #ifdef USE_M17N WcOption.auto_detect = old_auto_detect; UseContentCharset = TRUE; #endif buf->height = LASTLINE + 1; if (buf->firstLine && sbuf.firstLine) { Line *cur = sbuf.currentLine; int n; buf->pos = sbuf.pos + cur->bpos; while (cur->bpos && cur->prev) cur = cur->prev; if (cur->real_linenumber > 0) gotoRealLine(buf, cur->real_linenumber); else gotoLine(buf, cur->linenumber); n = (buf->currentLine->linenumber - buf->topLine->linenumber) - (cur->linenumber - sbuf.topLine->linenumber); if (n) { buf->topLine = lineSkip(buf, buf->topLine, n, FALSE); if (cur->real_linenumber > 0) gotoRealLine(buf, cur->real_linenumber); else gotoLine(buf, cur->linenumber); } buf->pos -= buf->currentLine->bpos; if (FoldLine && !is_html_type(buf->type)) buf->currentColumn = 0; else buf->currentColumn = sbuf.currentColumn; arrangeCursor(buf); } if (buf->check_url & CHK_URL) chkURLBuffer(buf); #ifdef USE_NNTP if (buf->check_url & CHK_NMID) chkNMIDBuffer(buf); if (buf->real_scheme == SCM_NNTP || buf->real_scheme == SCM_NEWS) reAnchorNewsheader(buf); #endif formResetBuffer(buf, sbuf.formitem); } /* shallow copy */ void copyBuffer(Buffer *a, Buffer *b) { readBufferCache(b); bcopy((void *)b, (void *)a, sizeof(Buffer)); } Buffer * prevBuffer(Buffer *first, Buffer *buf) { Buffer *b; for (b = first; b != NULL && b->nextBuffer != buf; b = b->nextBuffer) ; return b; } #define fwrite1(d, f) (fwrite(&d, sizeof(d), 1, f)==0) #define fread1(d, f) (fread(&d, sizeof(d), 1, f)==0) int writeBufferCache(Buffer *buf) { Str tmp; FILE *cache = NULL; Line *l; #ifdef USE_ANSI_COLOR int colorflag; #endif if (buf->savecache) return -1; if (buf->firstLine == NULL) goto _error1; tmp = tmpfname(TMPF_CACHE, NULL); buf->savecache = tmp->ptr; cache = fopen(buf->savecache, "w"); if (!cache) goto _error1; if (fwrite1(buf->currentLine->linenumber, cache) || fwrite1(buf->topLine->linenumber, cache)) goto _error; for (l = buf->firstLine; l; l = l->next) { if (fwrite1(l->real_linenumber, cache) || fwrite1(l->usrflags, cache) || fwrite1(l->width, cache) || fwrite1(l->len, cache) || fwrite1(l->size, cache) || fwrite1(l->bpos, cache) || fwrite1(l->bwidth, cache)) goto _error; if (l->bpos == 0) { if (fwrite(l->lineBuf, 1, l->size, cache) < l->size || fwrite(l->propBuf, sizeof(Lineprop), l->size, cache) < l->size) goto _error; } #ifdef USE_ANSI_COLOR colorflag = l->colorBuf ? 1 : 0; if (fwrite1(colorflag, cache)) goto _error; if (colorflag) { if (l->bpos == 0) { if (fwrite(l->colorBuf, sizeof(Linecolor), l->size, cache) < l->size) goto _error; } } #endif } fclose(cache); return 0; _error: fclose(cache); unlink(buf->savecache); _error1: buf->savecache = NULL; return -1; } int readBufferCache(Buffer *buf) { FILE *cache; Line *l = NULL, *prevl = NULL, *basel = NULL; long lnum = 0, clnum, tlnum; #ifdef USE_ANSI_COLOR int colorflag; #endif if (buf->savecache == NULL) return -1; cache = fopen(buf->savecache, "r"); if (cache == NULL || fread1(clnum, cache) || fread1(tlnum, cache)) { buf->savecache = NULL; return -1; } while (!feof(cache)) { lnum++; prevl = l; l = New(Line); l->prev = prevl; if (prevl) prevl->next = l; else buf->firstLine = l; l->linenumber = lnum; if (lnum == clnum) buf->currentLine = l; if (lnum == tlnum) buf->topLine = l; if (fread1(l->real_linenumber, cache) || fread1(l->usrflags, cache) || fread1(l->width, cache) || fread1(l->len, cache) || fread1(l->size, cache) || fread1(l->bpos, cache) || fread1(l->bwidth, cache)) break; if (l->bpos == 0) { basel = l; l->lineBuf = NewAtom_N(char, l->size + 1); fread(l->lineBuf, 1, l->size, cache); l->lineBuf[l->size] = '\0'; l->propBuf = NewAtom_N(Lineprop, l->size); fread(l->propBuf, sizeof(Lineprop), l->size, cache); } else if (basel) { l->lineBuf = basel->lineBuf + l->bpos; l->propBuf = basel->propBuf + l->bpos; } else break; #ifdef USE_ANSI_COLOR if (fread1(colorflag, cache)) break; if (colorflag) { if (l->bpos == 0) { l->colorBuf = NewAtom_N(Linecolor, l->size); fread(l->colorBuf, sizeof(Linecolor), l->size, cache); } else l->colorBuf = basel->colorBuf + l->bpos; } else { l->colorBuf = NULL; } #endif } buf->lastLine = prevl; buf->lastLine->next = NULL; fclose(cache); unlink(buf->savecache); buf->savecache = NULL; return 0; }