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... still programming ...

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Added infile/outfile parameter code (pasted from tal, more or less)
Added code to remove trailing spaces from output lines
This commit is contained in:
Thomas Jensen 1999-04-02 18:42:44 +00:00
parent 32e1584b43
commit 3271315a45
1 changed files with 131 additions and 25 deletions
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156
src/boxes.c
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@ -3,7 +3,7 @@
* Date created: March 18, 1999 (Thursday, 15:09h)
* Author: Thomas Jensen
* tsjensen@stud.informatik.uni-erlangen.de
* Version: $Id: boxes.c,v 1.5 1999/03/31 17:34:21 tsjensen Exp tsjensen $
* Version: $Id: boxes.c,v 1.6 1999/04/01 17:26:18 tsjensen Exp tsjensen $
* Language: ANSI C
* Platforms: sunos5/sparc, for now
* World Wide Web: http://home.pages.de/~jensen/boxes/
@ -14,6 +14,13 @@
* Revision History:
*
* $Log: boxes.c,v $
* Revision 1.6 1999/04/01 17:26:18 tsjensen
* ... still programming ...
* Some bug fixes
* Added size option (-s)
* Added Alignment Option (-a)
* It seems actually usable for drawing boxes :-)
*
* Revision 1.5 1999/03/31 17:34:21 tsjensen
* ... still programming ...
* (some bug fixes and restructuring)
@ -43,6 +50,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "boxes.h"
extern int snprintf (char *, size_t, const char *, ...); /* stdio.h */
@ -51,7 +59,7 @@ extern char *optarg; /* for getopt() */
extern int optind, opterr, optopt; /* for getopt() */
#ident "$Id: boxes.c,v 1.5 1999/03/31 17:34:21 tsjensen Exp tsjensen $"
#ident "$Id: boxes.c,v 1.6 1999/04/01 17:26:18 tsjensen Exp tsjensen $"
extern FILE *yyin; /* lex input file */
@ -116,6 +124,8 @@ struct { /* Command line options: */
long reqheight; /* requested box height (-s) */
char valign; /* text position inside box */
char halign; /* ('c', 'l', or 'r') */
FILE *infile;
FILE *outfile;
} opt;
@ -373,6 +383,7 @@ static int process_commandline (int argc, char *argv[])
int idummy;
char *pdummy;
int errfl = 0; /* true on error */
int outfile_existed; /* true if we overwrite a file */
memset (&opt, 0, sizeof(opt));
opt.tabstop = DEF_TABSTOP;
@ -568,7 +579,7 @@ static int process_commandline (int argc, char *argv[])
s = getenv ("HOME");
if (s) {
strncpy (buf, s, PATH_MAX);
buf[PATH_MAX-1-7] = '\0'; /* ensure space for /.boxes */
buf[PATH_MAX-1-7] = '\0'; /* ensure space for "/.boxes" */
strcat (buf, "/.boxes");
f = fopen (buf, "r");
if (f) {
@ -589,6 +600,72 @@ static int process_commandline (int argc, char *argv[])
}
}
/*
* Input and Output Files
*
* After any command line options, an input file and an output file may
* be specified (in that order). "-" may be substituted for standard
* input or output. A third file name would be invalid.
* The alogrithm is as follows:
*
* If no files are given, use stdin and stdout.
* Else If infile is "-", use stdin for input
* Else open specified file (die if it doesn't work)
* If no output file is given, use stdout for output
* Else If outfile is "-", use stdout for output
* Else open specified file for writing (die if it doesn't work)
* If a third file is given, die.
*/
if (argv[optind] == NULL) { /* neither infile nor outfile given */
opt.infile = stdin;
opt.outfile = stdout;
}
else {
if (strcmp (argv[optind], "-") == 0) {
opt.infile = stdin; /* use stdin for input */
}
else {
opt.infile = fopen (argv[optind], "r");
if (opt.infile == NULL) {
fprintf (stderr, "%s: Can\'t open input file -- %s\n", PROJECT,
argv[optind]);
return 9; /* can't read infile */
}
}
if (argv[optind+1] == NULL) {
opt.outfile = stdout; /* no outfile given */
}
else {
if (strcmp (argv[optind+1], "-") == 0) {
opt.outfile = stdout; /* use stdout for output */
}
else {
outfile_existed = !access (argv[optind+1], F_OK);
opt.outfile = fopen (argv[optind+1], "w");
if (opt.outfile == NULL) {
perror (PROJECT);
if (opt.infile != stdin)
fclose (opt.infile);
return 10;
}
}
if (argv[optind+2]) { /* illegal third file */
fprintf (stderr, "%s: illegal parameter -- %s\n",
PROJECT, argv[optind+2]);
usage (stderr);
if (opt.infile != stdin)
fclose (opt.infile);
if (opt.outfile != stdout) {
fclose (opt.outfile);
if (!outfile_existed) unlink (argv[optind+1]);
}
return 1;
}
}
}
return 0;
}
@ -621,10 +698,10 @@ int list_styles()
list[i] = &(designs[i]);
qsort (list, design_idx+1, sizeof(design_t *), style_sort);
printf ("Available Styles:\n");
printf ("-----------------\n\n");
fprintf (opt.outfile, "Available Styles:\n");
fprintf (opt.outfile, "-----------------\n\n");
for (i=0; i<=design_idx; ++i)
printf ("%s (%s):\n\n%s\n\n", list[i]->name,
fprintf (opt.outfile, "%s (%s):\n\n%s\n\n", list[i]->name,
list[i]->author? list[i]->author: "unknown artist",
list[i]->sample);
@ -681,6 +758,26 @@ static size_t expand_tabs_into (const char *input_buffer, const int in_len,
void btrim (char *text, size_t *len)
/*
* Remove trailing whitespace from line.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*/
{
long idx = (long) (*len) - 1;
while (idx >= 0 && (text[idx] == '\n' || text[idx] == '\r'
|| text[idx] == '\t' || text[idx] == ' '))
{
text[idx--] = '\0';
}
*len = idx + 1;
}
int read_all_input()
/*
* Read entire input from stdin and store it in 'input' array.
@ -705,7 +802,7 @@ int read_all_input()
input.indent = LINE_MAX;
input.maxline = 0;
while (fgets (buf, LINE_MAX+1, stdin))
while (fgets (buf, LINE_MAX+1, opt.infile))
{
if (input_size % 100 == 0) {
input_size += 100;
@ -720,15 +817,7 @@ int read_all_input()
input.lines[input.anz_lines].len = strlen (buf);
while (input.lines[input.anz_lines].len > 0 &&
(buf[input.lines[input.anz_lines].len-1] == '\n'
|| buf[input.lines[input.anz_lines].len-1] == '\r'
|| buf[input.lines[input.anz_lines].len-1] == ' '
|| buf[input.lines[input.anz_lines].len-1] == '\t'))
{
buf[input.lines[input.anz_lines].len-1] = '\0';
input.lines[input.anz_lines].len -= 1;
}
btrim (buf, &(input.lines[input.anz_lines].len));
if (input.lines[input.anz_lines].len > 0) {
newlen = expand_tabs_into (buf,
@ -1576,6 +1665,8 @@ static int output_box (const sentry_t *thebox)
size_t hfill;
char *hfill1, *hfill2; /* space before/after text */
size_t r;
char obuf[LINE_MAX+1]; /* final output buffer */
size_t obuf_len; /* length of content of obuf */
/*
* Create string of spaces for indentation
@ -1668,15 +1759,16 @@ static int output_box (const sentry_t *thebox)
for (j=0; j<nol; ++j) {
if (j < thebox[BTOP].height) {
printf ("%s%s%s%s\n", indentspc, thebox[BLEF].chars[j],
thebox[BTOP].chars[j], thebox[BRIG].chars[j]);
snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
thebox[BLEF].chars[j], thebox[BTOP].chars[j],
thebox[BRIG].chars[j]);
}
else if (vfill1) {
r = thebox[BTOP].width;
trailspc[r] = '\0';
printf ("%s%s%s%s\n", indentspc, thebox[BLEF].chars[j],
trailspc, thebox[BRIG].chars[j]);
snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
thebox[BLEF].chars[j], trailspc, thebox[BRIG].chars[j]);
trailspc[r] = ' ';
--vfill1;
}
@ -1686,24 +1778,38 @@ static int output_box (const sentry_t *thebox)
if (ti < (long) input.anz_lines) {
r = input.maxline - input.lines[ti].len;
trailspc[r] = '\0';
printf ("%s%s%s%s%s%s%s\n", indentspc, thebox[BLEF].chars[j],
hfill1, ti >= 0? input.lines[ti].text : "", hfill2,
snprintf (obuf, LINE_MAX+1, "%s%s%s%s%s%s%s", indentspc,
thebox[BLEF].chars[j], hfill1,
ti >= 0? input.lines[ti].text : "", hfill2,
trailspc, thebox[BRIG].chars[j]);
}
else {
r = thebox[BTOP].width;
trailspc[r] = '\0';
printf ("%s%s%s%s\n", indentspc, thebox[BLEF].chars[j],
trailspc, thebox[BRIG].chars[j]);
snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
thebox[BLEF].chars[j], trailspc, thebox[BRIG].chars[j]);
}
trailspc[r] = ' ';
}
else {
printf ("%s%s%s%s\n", indentspc, thebox[BLEF].chars[j],
snprintf (obuf, LINE_MAX+1, "%s%s%s%s", indentspc,
thebox[BLEF].chars[j],
thebox[BBOT].chars[j-(nol-thebox[BBOT].height)],
thebox[BRIG].chars[j]);
}
obuf_len = strlen (obuf);
if (obuf_len > LINE_MAX) {
size_t newlen = LINE_MAX;
btrim (obuf, &newlen);
}
else {
btrim (obuf, &obuf_len);
}
fprintf (opt.outfile, "%s\n", obuf);
}
BFREE (indentspc);