diff options
Diffstat (limited to 'contrib/syslinux/syslinux-4.03/com32/cmenu/libmenu/help.c')
| -rw-r--r-- | contrib/syslinux/syslinux-4.03/com32/cmenu/libmenu/help.c | 232 |
1 files changed, 0 insertions, 232 deletions
diff --git a/contrib/syslinux/syslinux-4.03/com32/cmenu/libmenu/help.c b/contrib/syslinux/syslinux-4.03/com32/cmenu/libmenu/help.c deleted file mode 100644 index 0df1e10..0000000 --- a/contrib/syslinux/syslinux-4.03/com32/cmenu/libmenu/help.c +++ /dev/null @@ -1,232 +0,0 @@ -/* -*- c -*- ------------------------------------------------------------- * - * - * Copyright 2004-2005 Murali Krishnan Ganapathy - All Rights Reserved - * - * 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, Inc., 53 Temple Place Ste 330, - * Boston MA 02111-1307, USA; either version 2 of the License, or - * (at your option) any later version; incorporated herein by reference. - * - * ----------------------------------------------------------------------- */ - -#include "help.h" -#include <stdio.h> -#include "string.h" -#include "com32io.h" -#include <syslinux/loadfile.h> // to read entire file into memory - -int nc, nr; // Number of columns/rows of the screen -char helpbasedir[HELPDIRLEN]; // name of help directory limited to HELPDIRLEN - -// Find the occurence of the count'th \n in buffer (or NULL) if not found -static char *findline(char *buffer, int count) -{ - int ctr; - char *p = buffer - 1; - - if (count < 1) - return buffer; - for (ctr = 0; ctr < count; ctr++) { - p = strchr(p + 1, '\n'); - if (p == NULL) - return NULL; - } - return p; -} - -// return the number of lines in buffer -static int countlines(char *buffer) -{ - int ans; - const char *p; - - p = buffer - 1; - ans = 1; - while (p) { - p = strchr(p + 1, '\n'); - ans++; - } - return ans; -} - -// Print numlines of text starting from buf -static void printtext(char *buf, int from) -{ - char *f, *t; - int right, nlines, i; - - // clear window to print - right = nc - HELP_RIGHT_MARGIN; - nlines = nr - HELP_BODY_ROW - HELP_BOTTOM_MARGIN - 1; - - f = findline(buf, from); - if (!f) - return; // nothing to print - if (*f == '\n') - f++; // start of from+1st line - t = f; - while (i < nlines) { - gotoxy(HELP_BODY_ROW + i, HELP_LEFT_MARGIN); - clear_end_of_line(); - putchar(SO); - gotoxy(HELP_BODY_ROW + i, nc - 1); - putch(LEFT_BORDER, 0x07); - putchar(SI); - - gotoxy(HELP_BODY_ROW + i, HELP_LEFT_MARGIN); - while (*t != '\n') { - if (*t == '\0') - return; - putchar(*t); - t++; - } - putchar('\n'); - t++; - i++; - } -} - -void showhelp(const char *filename) -{ - char ph; - char *title, *text; - union { - char *buffer; - void *vbuf; - } buf; // This is to avoild type-punning issues - - char line[512]; - size_t size; - int scan; - int rv, numlines, curr_line; - - if (getscreensize(1, &nr, &nc)) { - /* Unknown screen size? */ - nc = 80; - nr = 24; - } - ph = nr - HELP_BODY_ROW; - cls(); - - /* Turn autowrap off, to avoid scrolling the menu */ - printf(CSI "?7l"); - - if (filename == NULL) { // print file contents - strcpy(line, "Filename not given"); - goto puke; - } - - rv = loadfile(filename, (void **)&buf.vbuf, &size); // load entire file into memory - if (rv < 0) { // Error reading file or no such file - sprintf(line, "Error reading file or file not found\n file=%s", filename); - goto puke; - } - - title = buf.buffer; - text = findline(title, 1); // end of first line - *text++ = '\0'; // end the title string and increment text - - // Now we have a file just print it. - numlines = countlines(text); - curr_line = 0; - scan = KEY_ESC + 1; // anything except ESCAPE - - /* top, left, bottom, right, attr */ - drawbox(0, 0, nr - 1, nc - 1, 0x07); - while (scan != KEY_ESC) { - /* Title */ - gotoxy(1, (nc - strlen(title)) / 2); - fputs(title, stdout); - drawhorizline(2, HELP_LEFT_MARGIN - 1, nc - HELP_RIGHT_MARGIN, 0x07, 0); // dumb==0 - /* Text */ - printtext(text, curr_line); - gotoxy(HELP_BODY_ROW - 1, nc - HELP_RIGHT_MARGIN); - if (curr_line > 0) - putchar(HELP_MORE_ABOVE); - else - putchar(' '); - gotoxy(nr - HELP_BOTTOM_MARGIN - 1, nc - HELP_RIGHT_MARGIN); - if (curr_line < numlines - ph) - putchar(HELP_MORE_BELOW); - else - putchar(' '); - - scan = get_key(stdout, 0); // wait for user keypress - - switch (scan) { - case KEY_HOME: - curr_line = 0; - break; - case KEY_END: - curr_line = numlines; - break; - case KEY_UP: - curr_line--; - break; - case KEY_DOWN: - curr_line++; - break; - case KEY_PGUP: - curr_line -= ph; - break; - case KEY_PGDN: - curr_line += ph; - break; - default: - break; - } - if (curr_line > numlines - ph) - curr_line = numlines - ph; - if (curr_line < 0) - curr_line = 0; - } -out: - cls(); - return; - -puke: - gotoxy(HELP_BODY_ROW, HELP_LEFT_MARGIN); - fputs(line, stdout); - while (1) { - scan = get_key(stdin, 0); - if (scan == KEY_ESC) - break; - } - goto out; -} - -void runhelp(const char *filename) -{ - char fullname[HELPDIRLEN + 16]; - - cls(); - cursoroff(); - if (helpbasedir[0] != 0) { - strcpy(fullname, helpbasedir); - strcat(fullname, "/"); - strcat(fullname, filename); - showhelp(fullname); - } else - showhelp(filename); // Assume filename is absolute -} - -void runhelpsystem(unsigned int helpid) -{ - char filename[15]; - - sprintf(filename, "hlp%05d.txt", helpid); - runhelp(filename); -} - -void init_help(const char *helpdir) -{ - if (helpdir != NULL) - strcpy(helpbasedir, helpdir); - else - helpbasedir[0] = 0; -} - -void close_help(void) -{ -} |