| /* TUI display source window. |
| |
| Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, |
| Inc. |
| |
| Contributed by Hewlett-Packard Company. |
| |
| This file is part of GDB. |
| |
| 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 2 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, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* FIXME: cagney/2002-02-28: The GDB coding standard indicates that |
| "defs.h" should be included first. Unfortunatly some systems |
| (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h> |
| and they clash with "bfd.h"'s definiton of true/false. The correct |
| fix is to remove true/false from "bfd.h", however, until that |
| happens, hack around it by including "config.h" and <curses.h> |
| first. */ |
| |
| #include "config.h" |
| #ifdef HAVE_NCURSES_H |
| #include <ncurses.h> |
| #else |
| #ifdef HAVE_CURSES_H |
| #include <curses.h> |
| #endif |
| #endif |
| |
| #include "defs.h" |
| #include <ctype.h> |
| #include "symtab.h" |
| #include "frame.h" |
| #include "breakpoint.h" |
| #include "source.h" |
| #include "symtab.h" |
| |
| #include "tui.h" |
| #include "tuiData.h" |
| #include "tuiStack.h" |
| #include "tuiSourceWin.h" |
| #include "tuiSource.h" |
| |
| |
| /* Function to display source in the source window. */ |
| TuiStatus |
| tuiSetSourceContent (struct symtab *s, int lineNo, int noerror) |
| { |
| TuiStatus ret = TUI_FAILURE; |
| |
| if (s != (struct symtab *) NULL && s->filename != (char *) NULL) |
| { |
| register FILE *stream; |
| register int i, desc, c, lineWidth, nlines; |
| register char *srcLine = 0; |
| |
| if ((ret = tuiAllocSourceBuffer (srcWin)) == TUI_SUCCESS) |
| { |
| lineWidth = srcWin->generic.width - 1; |
| /* Take hilite (window border) into account, when calculating |
| the number of lines */ |
| nlines = (lineNo + (srcWin->generic.height - 2)) - lineNo; |
| desc = open_source_file (s); |
| if (desc < 0) |
| { |
| if (!noerror) |
| { |
| char *name = alloca (strlen (s->filename) + 100); |
| sprintf (name, "%s:%d", s->filename, lineNo); |
| print_sys_errmsg (name, errno); |
| } |
| ret = TUI_FAILURE; |
| } |
| else |
| { |
| if (s->line_charpos == 0) |
| find_source_lines (s, desc); |
| |
| if (lineNo < 1 || lineNo > s->nlines) |
| { |
| close (desc); |
| printf_unfiltered ( |
| "Line number %d out of range; %s has %d lines.\n", |
| lineNo, s->filename, s->nlines); |
| } |
| else if (lseek (desc, s->line_charpos[lineNo - 1], 0) < 0) |
| { |
| close (desc); |
| perror_with_name (s->filename); |
| } |
| else |
| { |
| register int offset, curLineNo, curLine, curLen, threshold; |
| TuiGenWinInfoPtr locator = locatorWinInfoPtr (); |
| TuiSourceInfoPtr src = &srcWin->detail.sourceInfo; |
| |
| if (srcWin->generic.title) |
| xfree (srcWin->generic.title); |
| srcWin->generic.title = xstrdup (s->filename); |
| |
| if (src->filename) |
| xfree (src->filename); |
| src->filename = xstrdup (s->filename); |
| |
| /* Determine the threshold for the length of the line |
| and the offset to start the display. */ |
| offset = src->horizontalOffset; |
| threshold = (lineWidth - 1) + offset; |
| stream = fdopen (desc, FOPEN_RT); |
| clearerr (stream); |
| curLine = 0; |
| curLineNo = src->startLineOrAddr.lineNo = lineNo; |
| if (offset > 0) |
| srcLine = (char *) xmalloc ( |
| (threshold + 1) * sizeof (char)); |
| while (curLine < nlines) |
| { |
| TuiWinElementPtr element = (TuiWinElementPtr) |
| srcWin->generic.content[curLine]; |
| |
| /* get the first character in the line */ |
| c = fgetc (stream); |
| |
| if (offset == 0) |
| srcLine = ((TuiWinElementPtr) |
| srcWin->generic.content[ |
| curLine])->whichElement.source.line; |
| /* Init the line with the line number */ |
| sprintf (srcLine, "%-6d", curLineNo); |
| curLen = strlen (srcLine); |
| i = curLen - |
| ((curLen / tuiDefaultTabLen ()) * tuiDefaultTabLen ()); |
| while (i < tuiDefaultTabLen ()) |
| { |
| srcLine[curLen] = ' '; |
| i++; |
| curLen++; |
| } |
| srcLine[curLen] = (char) 0; |
| |
| /* Set whether element is the execution point and |
| whether there is a break point on it. */ |
| element->whichElement.source.lineOrAddr.lineNo = |
| curLineNo; |
| element->whichElement.source.isExecPoint = |
| (strcmp (((TuiWinElementPtr) |
| locator->content[0])->whichElement.locator.fileName, |
| s->filename) == 0 |
| && curLineNo == ((TuiWinElementPtr) |
| locator->content[0])->whichElement.locator.lineNo); |
| if (c != EOF) |
| { |
| i = strlen (srcLine) - 1; |
| do |
| { |
| if ((c != '\n') && |
| (c != '\r') && (++i < threshold)) |
| { |
| if (c < 040 && c != '\t') |
| { |
| srcLine[i++] = '^'; |
| srcLine[i] = c + 0100; |
| } |
| else if (c == 0177) |
| { |
| srcLine[i++] = '^'; |
| srcLine[i] = '?'; |
| } |
| else |
| { /* Store the charcter in the line |
| buffer. If it is a tab, then |
| translate to the correct number of |
| chars so we don't overwrite our |
| buffer. */ |
| if (c == '\t') |
| { |
| int j, maxTabLen = tuiDefaultTabLen (); |
| |
| for (j = i - ( |
| (i / maxTabLen) * maxTabLen); |
| ((j < maxTabLen) && |
| i < threshold); |
| i++, j++) |
| srcLine[i] = ' '; |
| i--; |
| } |
| else |
| srcLine[i] = c; |
| } |
| srcLine[i + 1] = 0; |
| } |
| else |
| { /* If we have not reached EOL, then eat |
| chars until we do */ |
| while (c != EOF && c != '\n' && c != '\r') |
| c = fgetc (stream); |
| } |
| } |
| while (c != EOF && c != '\n' && c != '\r' && |
| i < threshold && (c = fgetc (stream))); |
| } |
| /* Now copy the line taking the offset into account */ |
| if (strlen (srcLine) > offset) |
| strcpy (((TuiWinElementPtr) srcWin->generic.content[ |
| curLine])->whichElement.source.line, |
| &srcLine[offset]); |
| else |
| ((TuiWinElementPtr) |
| srcWin->generic.content[ |
| curLine])->whichElement.source.line[0] = (char) 0; |
| curLine++; |
| curLineNo++; |
| } |
| if (offset > 0) |
| tuiFree (srcLine); |
| fclose (stream); |
| srcWin->generic.contentSize = nlines; |
| ret = TUI_SUCCESS; |
| } |
| } |
| } |
| } |
| return ret; |
| } |
| |
| |
| /* elz: this function sets the contents of the source window to empty |
| except for a line in the middle with a warning message about the |
| source not being available. This function is called by |
| tuiEraseSourceContents, which in turn is invoked when the source files |
| cannot be accessed */ |
| |
| void |
| tuiSetSourceContentNil (TuiWinInfoPtr winInfo, char *warning_string) |
| { |
| int lineWidth; |
| int nLines; |
| int curr_line = 0; |
| |
| lineWidth = winInfo->generic.width - 1; |
| nLines = winInfo->generic.height - 2; |
| |
| /* set to empty each line in the window, except for the one |
| which contains the message */ |
| while (curr_line < winInfo->generic.contentSize) |
| { |
| /* set the information related to each displayed line |
| to null: i.e. the line number is 0, there is no bp, |
| it is not where the program is stopped */ |
| |
| TuiWinElementPtr element = |
| (TuiWinElementPtr) winInfo->generic.content[curr_line]; |
| element->whichElement.source.lineOrAddr.lineNo = 0; |
| element->whichElement.source.isExecPoint = FALSE; |
| element->whichElement.source.hasBreak = FALSE; |
| |
| /* set the contents of the line to blank */ |
| element->whichElement.source.line[0] = (char) 0; |
| |
| /* if the current line is in the middle of the screen, then we want to |
| display the 'no source available' message in it. |
| Note: the 'weird' arithmetic with the line width and height comes from |
| the function tuiEraseSourceContent. We need to keep the screen and the |
| window's actual contents in synch */ |
| |
| if (curr_line == (nLines / 2 + 1)) |
| { |
| int i; |
| int xpos; |
| int warning_length = strlen (warning_string); |
| char *srcLine; |
| |
| srcLine = element->whichElement.source.line; |
| |
| if (warning_length >= ((lineWidth - 1) / 2)) |
| xpos = 1; |
| else |
| xpos = (lineWidth - 1) / 2 - warning_length; |
| |
| for (i = 0; i < xpos; i++) |
| srcLine[i] = ' '; |
| |
| sprintf (srcLine + i, "%s", warning_string); |
| |
| for (i = xpos + warning_length; i < lineWidth; i++) |
| srcLine[i] = ' '; |
| |
| srcLine[i] = '\n'; |
| |
| } /* end if */ |
| |
| curr_line++; |
| |
| } /* end while */ |
| } |
| |
| |
| /* Function to display source in the source window. This function |
| initializes the horizontal scroll to 0. */ |
| void |
| tuiShowSource (struct symtab *s, TuiLineOrAddress line, int noerror) |
| { |
| srcWin->detail.sourceInfo.horizontalOffset = 0; |
| tuiUpdateSourceWindowAsIs(srcWin, s, line, noerror); |
| } |
| |
| |
| /* Answer whether the source is currently displayed in the source window. */ |
| int |
| tuiSourceIsDisplayed (char *fname) |
| { |
| return (srcWin->generic.contentInUse && |
| (strcmp (((TuiWinElementPtr) (locatorWinInfoPtr ())-> |
| content[0])->whichElement.locator.fileName, fname) == 0)); |
| } |
| |
| |
| /* Scroll the source forward or backward vertically. */ |
| void |
| tuiVerticalSourceScroll (TuiScrollDirection scrollDirection, |
| int numToScroll) |
| { |
| if (srcWin->generic.content != (OpaquePtr) NULL) |
| { |
| TuiLineOrAddress l; |
| struct symtab *s; |
| TuiWinContent content = (TuiWinContent) srcWin->generic.content; |
| struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
| |
| if (cursal.symtab == (struct symtab *) NULL) |
| s = find_pc_symtab (deprecated_selected_frame->pc); |
| else |
| s = cursal.symtab; |
| |
| if (scrollDirection == FORWARD_SCROLL) |
| { |
| l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo + |
| numToScroll; |
| if (l.lineNo > s->nlines) |
| /*line = s->nlines - winInfo->generic.contentSize + 1; */ |
| /*elz: fix for dts 23398 */ |
| l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo; |
| } |
| else |
| { |
| l.lineNo = content[0]->whichElement.source.lineOrAddr.lineNo - |
| numToScroll; |
| if (l.lineNo <= 0) |
| l.lineNo = 1; |
| } |
| |
| print_source_lines (s, l.lineNo, l.lineNo + 1, 0); |
| } |
| } |
