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Added output_box() from boxes.c
This commit is contained in:
Thomas Jensen
parent
f8774543a9
commit
d983743471
220
src/generate.c
220
src/generate.c
@ -4,7 +4,7 @@
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* Date created: June 23, 1999 (Wednesday, 20:10h)
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* Author: Thomas Jensen
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* tsjensen@stud.informatik.uni-erlangen.de
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* Version: $Id$
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* Version: $Id: generate.c,v 1.1 1999/06/23 18:52:54 tsjensen Exp tsjensen $
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* Language: ANSI C
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* World Wide Web: http://home.pages.de/~jensen/boxes/
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* Purpose: Box generation, i.e. the drawing of boxes
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@ -12,7 +12,10 @@
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*
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* Revision History:
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*
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* $Log$
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* $Log: generate.c,v $
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* Revision 1.1 1999/06/23 18:52:54 tsjensen
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* Initial revision
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*/
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@ -25,7 +28,7 @@
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#include "generate.h"
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static const char rcsid_generate_c[] =
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"$Id$";
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"$Id: generate.c,v 1.1 1999/06/23 18:52:54 tsjensen Exp tsjensen $";
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@ -667,4 +670,215 @@ err:
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int output_box (const sentry_t *thebox)
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/*
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*
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* RETURNS: == 0 if successful
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* != 0 on error
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*
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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*/
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{
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size_t j;
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size_t nol = thebox[BRIG].height; /* number of output lines */
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char trailspc[LINE_MAX+1];
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char *indentspc;
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size_t vfill, vfill1, vfill2; /* empty lines/columns in box */
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size_t hfill;
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char *hfill1, *hfill2; /* space before/after text */
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size_t r;
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char obuf[LINE_MAX+1]; /* final output buffer */
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size_t obuf_len; /* length of content of obuf */
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size_t skip_start; /* lines to skip for box top */
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size_t skip_end; /* lines to skip for box bottom */
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size_t skip_left; /* true if left box part is to be skipped */
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/*
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* Create string of spaces for indentation
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*/
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if (opt.design->indentmode == 'b') {
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indentspc = (char *) malloc (input.indent+1);
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if (indentspc == NULL) {
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perror (PROJECT);
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return 1;
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}
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memset (indentspc, (int)' ', input.indent);
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indentspc[input.indent] = '\0';
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}
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else {
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indentspc = (char *) strdup ("");
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if (indentspc == NULL) {
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perror (PROJECT);
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return 1;
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}
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}
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/*
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* Provide string of spaces for filling of space between text and
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* right side of box
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*/
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memset (trailspc, (int)' ', LINE_MAX);
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trailspc[LINE_MAX] = '\0';
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/*
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* Compute number of empty lines in box (vfill).
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*/
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vfill = nol - thebox[BTOP].height - thebox[BBOT].height - input.anz_lines;
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vfill -= opt.design->padding[BTOP] + opt.design->padding[BBOT];
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if (opt.valign == 'c') {
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vfill1 = vfill / 2;
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vfill2 = vfill1 + (vfill % 2);
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}
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else if (opt.valign == 'b') {
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vfill1 = vfill;
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vfill2 = 0;
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}
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else {
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vfill1 = 0;
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vfill2 = vfill;
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}
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vfill1 += opt.design->padding[BTOP];
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vfill2 += opt.design->padding[BBOT];
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vfill += opt.design->padding[BTOP] + opt.design->padding[BBOT];
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/*
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* Provide strings for horizontal text alignment.
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*/
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hfill = thebox[BTOP].width - input.maxline;
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hfill1 = (char *) malloc (hfill+1);
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hfill2 = (char *) malloc (hfill+1);
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if (!hfill1 || !hfill2) {
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perror (PROJECT);
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return 1;
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}
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memset (hfill1, (int)' ', hfill+1);
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memset (hfill2, (int)' ', hfill+1);
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hfill1[hfill] = '\0';
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hfill2[hfill] = '\0';
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if (hfill == 0) {
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hfill1[0] = '\0';
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hfill2[0] = '\0';
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}
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else if (hfill == 1) {
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if (opt.halign == 'r'
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|| opt.design->padding[BLEF] > opt.design->padding[BRIG]) {
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hfill1[1] = '\0';
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hfill2[0] = '\0';
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}
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else {
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hfill1[0] = '\0';
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hfill2[1] = '\0';
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}
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}
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else {
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size_t hpl = opt.design->padding[BLEF];
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size_t hpr = opt.design->padding[BRIG];
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hfill -= hpl + hpr;
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if (opt.halign == 'c') {
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hfill1[hpl+hfill/2] = '\0';
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if (hfill % 2)
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hfill2[hpr+hfill/2+1] = '\0';
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else
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hfill2[hpr+hfill/2] = '\0';
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}
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else if (opt.halign == 'r') {
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hfill1[hfill+hpl] = '\0';
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hfill2[hpr] = '\0';
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}
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else {
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hfill1[hpl] = '\0';
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hfill2[hfill+hpr] = '\0';
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}
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hfill += hpl + hpr;
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}
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#if defined(DEBUG) || 0
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fprintf (stderr, "Alignment: hfill %d hfill1 %dx\' \' hfill2 %dx\' \' "
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"vfill %d vfill1 %d vfill2 %d.\n", hfill, strlen(hfill1),
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strlen(hfill2), vfill, vfill1, vfill2);
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#endif
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/*
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* Find out if and how many leading or trailing blank lines must be
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* skipped because the corresponding box side was defined empty.
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*/
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skip_start = 0;
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skip_end = 0;
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skip_left = 0;
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if (empty_side (opt.design, BTOP))
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skip_start = opt.design->shape[NW].height;
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if (empty_side (opt.design, BBOT))
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skip_end = opt.design->shape[SW].height;
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if (empty_side (opt.design, BLEF))
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skip_left = opt.design->shape[NW].width; /* could simply be 1, though */
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/*
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* Generate actual output
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*/
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for (j=skip_start; j<nol-skip_end; ++j) {
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if (j < thebox[BTOP].height) {
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snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
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skip_left?"":thebox[BLEF].chars[j], thebox[BTOP].chars[j],
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thebox[BRIG].chars[j]);
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}
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else if (vfill1) {
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r = thebox[BTOP].width;
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trailspc[r] = '\0';
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snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
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skip_left?"":thebox[BLEF].chars[j], trailspc,
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thebox[BRIG].chars[j]);
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trailspc[r] = ' ';
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--vfill1;
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}
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else if (j < nol-thebox[BBOT].height) {
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long ti = j - thebox[BTOP].height - (vfill-vfill2);
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if (ti < (long) input.anz_lines) {
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r = input.maxline - input.lines[ti].len;
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trailspc[r] = '\0';
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snprintf (obuf, LINE_MAX+1, "%s%s%s%s%s%s%s", indentspc,
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skip_left?"":thebox[BLEF].chars[j], hfill1,
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ti >= 0? input.lines[ti].text : "", hfill2,
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trailspc, thebox[BRIG].chars[j]);
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}
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else {
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r = thebox[BTOP].width;
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trailspc[r] = '\0';
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snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
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skip_left?"":thebox[BLEF].chars[j], trailspc,
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thebox[BRIG].chars[j]);
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}
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trailspc[r] = ' ';
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}
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else {
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snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
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skip_left?"":thebox[BLEF].chars[j],
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thebox[BBOT].chars[j-(nol-thebox[BBOT].height)],
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thebox[BRIG].chars[j]);
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}
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obuf_len = strlen (obuf);
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if (obuf_len > LINE_MAX) {
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size_t newlen = LINE_MAX;
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btrim (obuf, &newlen);
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}
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else {
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btrim (obuf, &obuf_len);
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}
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fprintf (opt.outfile, "%s\n", obuf);
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}
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BFREE (indentspc);
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BFREE (hfill1);
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BFREE (hfill2);
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return 0; /* all clear */
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}
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/*EOF*/ /* vim: set sw=4: */
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