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/*
htop - CommandScreen.c
(C) 2017,2020 ryenus
(C) 2020,2021 htop dev team
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "CommandScreen.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "Macros.h"
#include "Panel.h"
#include "ProvideCurses.h"
static void CommandScreen_scan(InfoScreen* this) {
Panel* panel = this->display;
int idx = MAXIMUM(Panel_getSelectedIndex(panel), 0);
Panel_prune(panel);
const char* p = Process_getCommand(this->process);
size_t line_maxlen = COLS < 40 ? 40 : COLS;
size_t line_offset = 0;
size_t last_space = 0;
char* line = xCalloc(line_maxlen + 1, sizeof(char));
for (; *p != '\0'; p++) {
if (line_offset >= line_maxlen) {
assert(line_offset <= line_maxlen);
assert(last_space <= line_maxlen);
size_t line_len = last_space <= 0 ? line_offset : last_space;
char tmp = line[line_len];
line[line_len] = '\0';
InfoScreen_addLine(this, line);
line[line_len] = tmp;
assert(line_len <= line_offset);
line_offset -= line_len;
memmove(line, line + line_len, line_offset);
last_space = 0;
}
line[line_offset++] = *p;
if (*p == ' ') {
last_space = line_offset;
}
}
if (line_offset > 0) {
line[line_offset] = '\0';
InfoScreen_addLine(this, line);
}
free(line);
Panel_setSelected(panel, idx);
}
static void CommandScreen_draw(InfoScreen* this) {
InfoScreen_drawTitled(this, "Command of process %d - %s", Process_getPid(this->process), Process_getCommand(this->process));
}
const InfoScreenClass CommandScreen_class = {
.super = {
.extends = Class(Object),
.delete = CommandScreen_delete
},
.scan = CommandScreen_scan,
.draw = CommandScreen_draw
};
CommandScreen* CommandScreen_new(Process* process) {
CommandScreen* this = AllocThis(CommandScreen);
return (CommandScreen*) InfoScreen_init(&this->super, process, NULL, LINES - 2, " ");
}
void CommandScreen_delete(Object* this) {
free(InfoScreen_done((InfoScreen*)this));
}
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