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getopt-based long options and --no-color

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(thanks to Vincent Launchbury)
This commit is contained in:
Hisham Muhammad 2010-02-25 02:04:24 +00:00
parent 02a30bfecd
commit 62a31673cb
2 changed files with 77 additions and 49 deletions
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2
ChangeLog
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@ -5,6 +5,8 @@ What's new in version 0.8.4
(thanks to Anders Torger)
* Fix license terms with regard to PLPA
(thanks to Tom Callaway)
* getopt-based long options and --no-color
(thanks to Vincent Launchbury)
What's new in version 0.8.3

124
htop.c
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@ -1,6 +1,6 @@
/*
htop - htop.c
(C) 2004-2008 Hisham H. Muhammad
(C) 2004-2010 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
@ -12,6 +12,7 @@ in the source distribution for its full text.
#include <ctype.h>
#include <stdbool.h>
#include <locale.h>
#include <getopt.h>
#include "ProcessList.h"
#include "CRT.h"
@ -36,22 +37,29 @@ in the source distribution for its full text.
#define INCSEARCH_MAX 40
#define COPYRIGHT "(C) 2004-2010 Hisham Muhammad"
static void printVersionFlag() {
clear();
printf("htop " VERSION " - (C) 2004-2008 Hisham Muhammad.\n");
printf("Released under the GNU GPL.\n\n");
fputs("htop " VERSION " - " COPYRIGHT "\n"
"Released under the GNU GPL.\n\n",
stdout);
exit(0);
}
static void printHelpFlag() {
clear();
printf("htop " VERSION " - (C) 2004-2008 Hisham Muhammad.\n");
printf("Released under the GNU GPL.\n\n");
printf("-d DELAY Delay between updates, in tenths of seconds\n\n");
printf("-u USERNAME Show only processes of a given user\n\n");
printf("--sort-key COLUMN Sort by this column (use --sort-key help for a column list)\n\n");
printf("Press F1 inside htop for online help.\n");
printf("See the man page for full information.\n\n");
fputs("htop " VERSION " - " COPYRIGHT "\n"
"Released under the GNU GPL.\n\n"
"-C --no-color Use a monochrome color scheme\n"
"-d --delay=DELAY Set the delay between updates, in tenths of seconds\n"
"-h --help Print this help screen\n"
"-s --sort-key=COLUMN Sort by COLUMN (try --sort-key=help for a list)\n"
"-u --user=USERNAME Show only processes of a given user\n"
"-v --version Print version info\n"
"\n"
"Long options may be passed with a single dash.\n\n"
"Press F1 inside htop for online help.\n"
"See 'man htop' for more information.\n",
stdout);
exit(0);
}
@ -62,7 +70,7 @@ static void showHelp(ProcessList* pl) {
for (int i = 0; i < LINES-1; i++)
mvhline(i, 0, ' ', COLS);
mvaddstr(0, 0, "htop " VERSION " - (C) 2004-2008 Hisham Muhammad.");
mvaddstr(0, 0, "htop " VERSION " - " COPYRIGHT);
mvaddstr(1, 0, "Released under the GNU GPL. See 'man' page for more info.");
attrset(CRT_colors[DEFAULT_COLOR]);
@ -139,7 +147,7 @@ static void showHelp(ProcessList* pl) {
mvaddstr(18, 0, " a:");
#endif
mvaddstr(19, 0, " F2 S"); mvaddstr(19,40, " F6 >");
mvaddstr(20, 0, " F1 h"); mvaddstr(20,40, " l");
mvaddstr(20, 0, " ? F1 h"); mvaddstr(20,40, " l");
mvaddstr(21, 0, " F10 q"); mvaddstr(21,40, " s");
attrset(CRT_colors[DEFAULT_COLOR]);
@ -238,6 +246,20 @@ int main(int argc, char** argv) {
int delay = -1;
bool userOnly = false;
uid_t userId = 0;
int usecolors = 1;
int opt, opti=0;
static struct option long_opts[] =
{
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'v'},
{"delay", required_argument, 0, 'd'},
{"sort-key", required_argument, 0, 's'},
{"user", required_argument, 0, 'u'},
{"no-color", no_argument, 0, 'C'},
{"no-colour",no_argument, 0, 'C'},
{0,0,0,0}
};
int sortKey = 0;
char *lc_ctype = getenv("LC_CTYPE");
@ -246,43 +268,44 @@ int main(int argc, char** argv) {
else
setlocale(LC_CTYPE, getenv("LC_ALL"));
int arg = 1;
while (arg < argc) {
if (String_eq(argv[arg], "--help")) {
printHelpFlag();
} else if (String_eq(argv[arg], "--version")) {
printVersionFlag();
} else if (String_eq(argv[arg], "--sort-key")) {
if (arg == argc - 1) printHelpFlag();
arg++;
char* field = argv[arg];
if (String_eq(field, "help")) {
for (int j = 1; j < LAST_PROCESSFIELD; j++)
printf ("%s\n", Process_fieldNames[j]);
exit(0);
}
sortKey = ColumnsPanel_fieldNameToIndex(field);
if (sortKey == -1) {
fprintf(stderr, "Error: invalid column \"%s\".\n", field);
exit(1);
}
} else if (String_eq(argv[arg], "-d")) {
if (arg == argc - 1) printHelpFlag();
arg++;
sscanf(argv[arg], "%d", &delay);
if (delay < 1) delay = 1;
if (delay > 100) delay = 100;
} else if (String_eq(argv[arg], "-u")) {
if (arg == argc - 1) printHelpFlag();
arg++;
setUserOnly(argv[arg], &userOnly, &userId);
} else {
fprintf(stderr, "Error: unknown flag: %s\n", argv[arg]);
exit(1);
/* Parse arguments */
while ((opt = getopt_long_only(argc, argv, "hvCs:d:u:", long_opts, &opti))) {
if (opt == EOF) break;
switch (opt) {
case 'h':
printHelpFlag();
break;
case 'v':
printVersionFlag();
break;
case 's':
if (strcmp(optarg, "help")) {
for (int j = 1; j < LAST_PROCESSFIELD; j++)
printf ("%s\n", Process_fieldNames[j]);
exit(0);
}
sortKey = ColumnsPanel_fieldNameToIndex(optarg);
if (sortKey == -1) {
fprintf(stderr, "Error: invalid column \"%s\".\n", optarg);
exit(1);
}
break;
case 'd':
sscanf(optarg, "%d", &delay);
if (delay < 1) delay = 1;
if (delay > 100) delay = 100;
break;
case 'u':
setUserOnly(optarg, &userOnly, &userId);
break;
case 'C':
usecolors=0;
break;
}
arg++;
}
if (access(PROCDIR, R_OK) != 0) {
fprintf(stderr, "Error: could not read procfs (compiled to look in %s).\n", PROCDIR);
exit(1);
@ -315,6 +338,8 @@ int main(int argc, char** argv) {
// FIXME: move delay code to settings
if (delay != -1)
settings->delay = delay;
if (!usecolors)
settings->colorScheme = COLORSCHEME_MONOCHROME;
CRT_init(settings->delay, settings->colorScheme);
@ -532,6 +557,7 @@ int main(int argc, char** argv) {
}
case KEY_F(1):
case 'h':
case '?':
{
showHelp(pl);
FunctionBar_draw(defaultBar, NULL);