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-rw-r--r--buffer.c676
1 files changed, 676 insertions, 0 deletions
diff --git a/buffer.c b/buffer.c
new file mode 100644
index 0000000..4ea4982
--- /dev/null
+++ b/buffer.c
@@ -0,0 +1,676 @@
+#include "fm.h"
+
+#ifdef 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 /* 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->currentURL.scheme = SCM_UNKNOWN;
+ n->baseURL = NULL;
+ n->baseTarget = NULL;
+ n->buffername = "";
+ n->bufferprop = BP_NORMAL;
+ n->clone = New(int);
+ *n->clone = 1;
+ n->linelen = 0;
+ n->trbyte = 0;
+#ifdef USE_SSL
+ n->ssl_certificate = NULL;
+#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;
+
+ 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) {
+ if (buf->real_scheme != SCM_LOCAL || buf->bufferprop & BP_FRAME)
+ unlink(buf->sourcefile);
+ }
+ while (buf->frameset) {
+ deleteFrameSet(buf->frameset);
+ buf->frameset = popFrameTree(&(buf->frameQ), NULL, NULL);
+ }
+}
+
+/*
+ * 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);
+ 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, buf->filename);
+ }
+ 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) {
+ sprintf(msg, "First line is #%ld", l->linenumber);
+ disp_message(msg, FALSE);
+ buf->topLine = buf->currentLine = l;
+ return;
+ }
+ if (buf->lastLine->linenumber < n) {
+ l = buf->lastLine;
+ sprintf(msg, "Last line is #%ld", buf->lastLine->linenumber);
+ disp_message(msg, FALSE);
+ buf->currentLine = l;
+ buf->topLine = lineSkip(buf, buf->currentLine, - (LASTLINE - 1), FALSE);
+ return;
+ }
+ for (; l != NULL; l = l->next) {
+ if (l->linenumber >= n) {
+ buf->currentLine = l;
+ if (n < buf->topLine->linenumber ||
+ buf->topLine->linenumber + LASTLINE <= n)
+ buf->topLine = lineSkip(buf, l, -(LASTLINE + 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) {
+ sprintf(msg, "First line is #%ld", l->real_linenumber);
+ disp_message(msg, FALSE);
+ buf->topLine = buf->currentLine = l;
+ return;
+ }
+ if (buf->lastLine->real_linenumber < n) {
+ l = buf->lastLine;
+ sprintf(msg, "Last line is #%ld", buf->lastLine->real_linenumber);
+ disp_message(msg, FALSE);
+ buf->currentLine = l;
+ buf->topLine = lineSkip(buf, buf->currentLine, - (LASTLINE - 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 + LASTLINE <= n)
+ buf->topLine = lineSkip(buf, l, -(LASTLINE + 1) / 2, FALSE);
+ break;
+ }
+ }
+}
+
+
+static Buffer *
+listBuffer(Buffer * top, Buffer * current)
+{
+ int i, c = 0;
+ Buffer *buf = top;
+
+ move(0, 0);
+#ifdef COLOR
+ if (useColor) {
+ setfcolor(basic_color);
+#ifdef BG_COLOR
+ setbcolor(bg_color);
+#endif /* BG_COLOR */
+ }
+#endif /* 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();
+ 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;
+ int top, linenum, cursorY, pos, currentColumn;
+ AnchorList *formitem;
+
+ init_stream(&f, SCM_LOCAL, NULL);
+ examineFile(buf->sourcefile, &f);
+ if (f.stream == NULL)
+ return;
+
+ if (buf->firstLine == NULL) {
+ top = 1;
+ linenum = 1;
+ } else {
+ top = buf->topLine->linenumber;
+ linenum = buf->currentLine->linenumber;
+ }
+ cursorY = buf->cursorY;
+ pos = buf->pos;
+ currentColumn = buf->currentColumn;
+ clearBuffer(buf);
+ while (buf->frameset) {
+ deleteFrameSet(buf->frameset);
+ buf->frameset = popFrameTree(&(buf->frameQ), NULL, NULL);
+ }
+
+ formitem = buf->formitem;
+ buf->href = NULL;
+ buf->name = NULL;
+ buf->img = NULL;
+ buf->formitem = NULL;
+ buf->width = INIT_BUFFER_WIDTH;
+
+ loadHTMLstream(&f, buf, NULL, FALSE);
+ UFclose(&f);
+
+ buf->topLine = buf->firstLine;
+ buf->lastLine = buf->currentLine;
+ buf->currentLine = buf->firstLine;
+ buf->height = LASTLINE + 1;
+ buf->topLine = lineSkip(buf, buf->topLine, top - 1, FALSE);
+ gotoLine(buf, linenum);
+ buf->pos = pos;
+ buf->currentColumn = currentColumn;
+ arrangeCursor(buf);
+ if (buf->check_url & CHK_URL)
+ chkURL();
+#ifdef USE_NNTP
+ if (buf->check_url & CHK_NMID)
+ chkNMID();
+#endif
+ formResetBuffer(buf, 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 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) ||
+ fwrite(l->lineBuf, 1, l->len, cache) < l->len ||
+ fwrite(l->propBuf, sizeof(Lineprop), l->len, cache) < l->len)
+ goto _error;
+#ifdef ANSI_COLOR
+ colorflag = l->colorBuf ? 1 : 0;
+ if (fwrite1(colorflag, cache))
+ goto _error;
+ if (colorflag) {
+ if (fwrite(l->colorBuf, sizeof(Linecolor), l->len, cache) < l->len)
+ 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;
+ long lnum = 0, clnum, tlnum;
+#ifdef 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))
+ break;
+ l->lineBuf = New_N(char, l->len + 1);
+ fread(l->lineBuf, 1, l->len, cache);
+ l->lineBuf[l->len] = '\0';
+ l->propBuf = New_N(Lineprop, l->len);
+ fread(l->propBuf, sizeof(Lineprop), l->len, cache);
+#ifdef ANSI_COLOR
+ if (fread1(colorflag, cache))
+ break;
+ if (colorflag) {
+ l->colorBuf = New_N(Linecolor, l->len);
+ fread(l->colorBuf, sizeof(Linecolor), l->len, cache);
+ } else {
+ l->colorBuf = NULL;
+ }
+#endif
+ }
+ buf->lastLine = prevl;
+ buf->lastLine->next = NULL;
+ fclose(cache);
+ unlink(buf->savecache);
+ buf->savecache = NULL;
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 21:21:45 +0000