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/*
Quickplot - an interactive 2D plotter
Copyright (C) 1998-2011 Lance Arsenault
This file is part of Quickplot.
Quickplot 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 3 of the License,
or (at your option) any later version.
Quickplot 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 Quickplot. If not, see <http://www.gnu.org/licenses/>.
*/
#include <locale.h>
static inline
void print_text(const char *filename)
{
int fd;
char buf[1024];
ssize_t n, i;
fd = qp_find_doc_file(filename, NULL);
if(fd == -1) exit(1);
while((n = read(fd, buf, 1024)) > 0)
{
while(n)
{
i = write(STDOUT_FILENO, buf, n);
if(i < 1)
exit(1);
n -= i;
}
}
exit(0);
}
static inline
void version(void)
{
printf("%s\n", VERSION);
exit(0);
}
static inline
void print_arg_error(void)
{
QP_ERROR("Bad arguments:\n%s\n", parser->p1.err);
exit(1);
}
#define ERR_LEN (1024*8)
/* We do not bother using any memory unless there is a
* fatal parsing error.
* We accumulate all command line error messages and
* when print them, saving the user time. */
static
void add_error(const char *fmt, ...)
{
va_list ap;
ssize_t n;
char *err;
size_t *len;
len = &(parser->p1.elen);
if(parser->p1.err == NULL)
{
parser->p1.err = qp_malloc(ERR_LEN);
*len = 0;
}
err = parser->p1.err;
va_start(ap, fmt);
n = vsnprintf(&((err)[*len]), ERR_LEN-(*len), fmt, ap);
va_end(ap);
if(n <= 0)
{
QP_ERROR("internal parsing error\n");
exit(1);
}
*len += n;
if(*len >= ERR_LEN)
print_arg_error();
}
static inline
void check_color_opt(const char *long_opt, const char *arg)
{
/* This is just to test for color parse error */
GdkRGBA rgba;
if(!gdk_rgba_parse(&rgba, arg))
add_error("for argument option %s=\"%s\"\n"
" failed to parse string "
"\"%s\" to a color\n", long_opt,
arg, arg);
#ifdef QP_DEBUG
else
DEBUG("opt %s=\"%s\" => color=rgba(%g,%g,%g,%g)\n",
long_opt, arg, rgba.red, rgba.green, rgba.blue, rgba.alpha);
#endif
}
/* returns 0 for not read ready
* returns 1 for read ready */
static
int check_stdin(void)
{
/* Check for read on stdin */
long usec;
struct timeval tv;
fd_set fds;
int ret;
tv.tv_sec = 0;
tv.tv_usec = 400000;
usec = tv.tv_usec;
FD_ZERO(&fds);
FD_SET(STDIN_FILENO, &fds);
errno = 0;
ret = select(STDIN_FILENO+1, &fds, NULL, NULL, &tv);
if(ret > 0)
{
QP_NOTICE("Reading stdin\n");
return 1;
}
if(ret == 0)
{
QP_INFO("Nothing to read on stdin in %ld milli seconds\n", usec/1000);
return 0;
}
QP_NOTICE("Error checking data on stdin: errno=%d: %s\n",
errno, strerror(errno));
return 0;
}
static
void load_file(const char *filename)
{
if(parser->p2.needs_graph && app->op_default_graph)
{
ASSERT(qp_sllist_last(app->sources));
if(qp_win_graph_default_source(NULL, (qp_source_t)
qp_sllist_last(app->sources), NULL))
exit(1);
parser->p2.needs_graph = NULL;
}
if(!strcmp(filename, "-") &&
(parser->p2.got_stdin || !app->op_pipe))
return;
if(!qp_source_create(filename, QP_TYPE_UNKNOWN))
exit(1);
parser->p2.needs_graph = (char *) filename;
if(!strcmp(filename, "-"))
parser->p2.got_stdin = 1;
}
static inline
void check_load_stdin(int here)
{
if(!parser->p2.got_stdin &&
(!app->op_read_pipe_here || here)
&& app->op_pipe)
{
/* The loading of stdin cannot be done until before
* the first file or plot option that is --plot,
* --plot-file, --file, or FILE, so that we are
* may catch any file reading options
* that may effect the reading of the pipe,
* that may be in arguments before those. */
load_file("-");
}
}
/* This should not fail given we checked colors in the 1st pass */
static inline
void get_color(struct qp_colora *c, const char *str)
{
GdkRGBA rgba;
gboolean ret;
rgba.alpha = 1.0;
ret = gdk_rgba_parse(&rgba, str);
VASSERT(ret,"failed to parse color string\n");
if(!ret)
{
QP_ERROR("failed to parse color string %s\n", str);
exit(1);
}
c->r = rgba.red;
c->g = rgba.green;
c->b = rgba.blue;
c->a = rgba.alpha;
}
#if 0
/* This is being replaced by qp_startup_idle_callback()
* in win.c. An idle callback is used for each qp_win in
* qp_startup_idle_callback(). It's setup in qp_win_create()
* and qp_win_copy_create() */
/* We flip back the tab and wait for the drawing to
* finish and then flip back to the next tab and
* so on, until we are at the first tab. */
static
gboolean startup_idle_callback(gpointer data)
{
static struct qp_win *qp = NULL;
struct qp_graph *first_graph;
if(!qp)
{
qp = qp_sllist_first(app->qps);
ASSERT(qp);
ASSERT(qp->window);
ASSERT(qp->initializing);
}
else if(qp->initializing == 2)
{
/* A user wants to delete this window, maybe
* before we finished drawing all the tabs. */
struct qp_win *q;
q = qp_sllist_begin(app->qps);
while(q && q != qp)
q = qp_sllist_next(app->qps);
q = qp_sllist_next(app->qps);
/* q == NULL or the next qp */
qp_win_destroy(qp);
qp = q;
if(!qp)
return FALSE;
ASSERT(qp->initializing);
}
first_graph = qp_sllist_first(qp->graphs);
ASSERT(first_graph);
if(first_graph == qp->current_graph)
{
/* we are at the first tab */
/* see if there are more main windows */
struct qp_win *q;
q = qp_sllist_begin(app->qps);
while(q && q != qp)
q = qp_sllist_next(app->qps);
/* done initializing */
qp->initializing = 0;
qp = qp_sllist_next(app->qps);
if(qp)
{
ASSERT(qp->initializing);
/* now check that all the tabs have
* been flipped in this qp */
return startup_idle_callback(NULL);
}
return FALSE; /* remove this idle callback */
}
/* We flip back the tab */
gtk_notebook_prev_page(GTK_NOTEBOOK(qp->notebook));
/* call this when we are idle again. Hopefully
* after drawing the graph. */
return TRUE;
}
#endif
static inline
int get_yes_no_auto_int(const char *arg, const char *option)
{
if(!strncasecmp(arg, "no", 1))
return 0;
if(!strncasecmp(arg, "yes", 1))
return 1;
if(!strncasecmp(arg, "auto", 1))
return -1;
QP_ERROR("bad option: %s='%s'\n", option, arg);
exit(1);
return 1;
}
static inline
long get_long(const char *s, long min, long max, const char *opt)
{
char *endptr = NULL;
long val = 0;
val = strtol(s, &endptr, 10);
if(s == endptr || !endptr ||
val == LONG_MAX || val == LONG_MIN)
{
QP_ERROR("option has bad integer number: %s='%s'\n", opt, s);
exit(1);
}
if(val < min)
return min;
if(val > max)
return max;
return val;
}
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