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/*
* nvidia-installer: A tool for installing NVIDIA software packages on
* Unix and Linux systems.
*
* Copyright (C) 2003 NVIDIA Corporation
*
* 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
*
* format.c - this source file contains routines for formatting string
* output.
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include "nvidia-installer.h"
#include "format.h"
#include "misc.h"
static unsigned short __terminal_width = 0;
#define DEFAULT_WIDTH 75
/*
* Format and display a printf style string such that it fits within
* the terminal width
*/
#define NV_VFORMAT(stream, wb, prefix, fmt) \
do { \
char *buf; \
NV_VSNPRINTF(buf, fmt); \
vformat(stream, wb, prefix, buf); \
free (buf); \
} while(0)
static void vformat(FILE *stream, const int wb,
const char *prefix, const char *buf);
/*
* reset_current_terminal_width() - if new_val is zero, then use the
* TIOCGWINSZ ioctl to get the current width of the terminal, and
* assign it the value to __terminal_width. If the ioctl fails, use a
* hardcoded constant. If new_val is non-zero, then use new_val.
*/
void reset_current_terminal_width(unsigned short new_val)
{
struct winsize ws;
if (new_val) {
__terminal_width = new_val;
return;
}
if (ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
__terminal_width = DEFAULT_WIDTH;
} else {
__terminal_width = ws.ws_col - 1;
}
} /* get_current_terminal_width() */
/*
* fmtout() - stdout format function: prints the given string to
* stdout with no prefix.
*/
void fmtout(const char *fmt, ...)
{
NV_VFORMAT(stdout, TRUE, NULL, fmt);
} /* fmtout() */
/*
* fmtoutp() - stdout format function with prefix: prints the given
* string to stdout with the given prefix.
*/
void fmtoutp(const char *prefix, const char *fmt, ...)
{
NV_VFORMAT(stdout, TRUE, prefix, fmt);
} /* fmtoutp() */
/*
* fmterr() - stderr format function: prints the given string to
* stderr with no prefix.
*/
void fmterr(const char *fmt, ...)
{
NV_VFORMAT(stderr, TRUE, NULL, fmt);
} /* fmterr() */
/*
* fmterrp() - stderr format function: prints the given string to
* stderr with the given prefix.
*/
void fmterrp(const char *prefix, const char *fmt, ...)
{
NV_VFORMAT(stderr, TRUE, prefix, fmt);
} /* fmterrp() */
/*
* format() & vformat() - these takes a printf-style format string and
* a variable list of args. We use NV_VSNPRINTF to generate the
* desired string, and then call nv_format_text_rows() to format the
* string so that not more than __terminal_width characters are
* printed across.
*
* The resulting formatted output is written to the specified stream.
* The output may also include an optional prefix (to be prepended on
* the first line, and filled with spaces on subsequent lines.
*
* The wb argument indicates whether the line wrapping should only
* break on word boundaries.
*/
void format(FILE *stream, const char *prefix, const char *fmt, ...)
{
NV_VFORMAT(stream, TRUE, prefix, fmt);
} /* format() */
static void vformat(FILE *stream, const int wb,
const char *prefix, const char *buf)
{
int i;
TextRows *t;
if (!__terminal_width) reset_current_terminal_width(0);
t = nv_format_text_rows(prefix, buf, __terminal_width, wb);
for (i = 0; i < t->n; i++) fprintf(stream, "%s\n", t->t[i]);
nv_free_text_rows(t);
} /* vformat() */
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