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add default-terminal-width and use-terminal-width

This commit is contained in:
David Rose 2005-02-26 23:40:03 +00:00
parent c6bfa85011
commit 06e85ef8f7
1 changed files with 34 additions and 16 deletions
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50
pandatool/src/progbase/programBase.cxx
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@ -32,6 +32,8 @@
#include "config_dconfig.h"
#include "string_utils.h"
#include "vector_string.h"
#include "configVariableInt.h"
#include "configVariableBool.h"
#include <stdlib.h>
#include <algorithm>
@ -74,6 +76,19 @@ static void flush_nout() {
nout << flush;
}
static ConfigVariableInt default_terminal_width
("default-terminal-width", 72,
PRC_DESC("Specify the column at which to wrap output lines "
"from pandatool-based programs, if it cannot be determined "
"automatically."));
static ConfigVariableBool use_terminal_width
("use-terminal-width", true,
PRC_DESC("True to try to determine the terminal width automatically from "
"the operating system, if supported; false to use the width "
"specified by default-terminal-width even if the operating system "
"appears to report a valid width."));
////////////////////////////////////////////////////////////////////
// Function: ProgramBase::Constructor
// Access: Public
@ -1417,23 +1432,26 @@ sort_options() {
void ProgramBase::
get_terminal_width() {
if (!_got_terminal_width) {
#ifdef IOCTL_TERMINAL_WIDTH
struct winsize size;
int result = ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&size);
if (result < 0) {
// Couldn't determine the width for some reason. Instead of
// complaining, just punt.
_terminal_width = 72;
} else {
// Subtract 10% for the comfort margin at the edge.
_terminal_width = size.ws_col - min(8, (int)(size.ws_col * 0.1));
}
#else // IOCTL_TERMINAL_WIDTH
_terminal_width = 72;
#endif // IOCTL_TERMINAL_WIDTH
_got_terminal_width = true;
_got_option_indent = false;
#ifdef IOCTL_TERMINAL_WIDTH
if (use_terminal_width) {
struct winsize size;
int result = ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&size);
if (result < 0 || size.ws_col < 10) {
// Couldn't determine the width for some reason. Instead of
// complaining, just punt.
_terminal_width = default_terminal_width;
} else {
// Subtract 10% for the comfort margin at the edge.
_terminal_width = size.ws_col - min(8, (int)(size.ws_col * 0.1));
}
return;
}
#endif // IOCTL_TERMINAL_WIDTH
_terminal_width = default_terminal_width;
}
}