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Merge pull request #36 from nibroc/nethogs-28-user-name-garbled

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Truncate user names when necessary (fixes #28) and fix alignment of sent/received fields
This commit is contained in:
Arnout Engelen
2016-03-02 09:05:00 +01:00
parent 8cd090c206 7c19942be9
commit c0b69e51af
1 changed files with 68 additions and 26 deletions
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94
cui.cpp
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@@ -52,6 +52,17 @@ extern unsigned refreshcount;
#define PID_MAX 4194303
const int COLUMN_WIDTH_PID = 7;
const int COLUMN_WIDTH_USER = 8;
const int COLUMN_WIDTH_DEV = 5;
const int COLUMN_WIDTH_SENT = 11;
const int COLUMN_WIDTH_RECEIVED = 11;
const int COLUMN_WIDTH_UNIT = 6;
const char * COLUMN_FORMAT_PID = "%7d";
const char * COLUMN_FORMAT_SENT = "%11.3f";
const char * COLUMN_FORMAT_RECEIVED = "%11.3f";
class Line
{
public:
@@ -109,47 +120,78 @@ std::string uid2username (uid_t uid)
return std::string(pwd->pw_name);
}
/**
* Render the provided text at the specified location, truncating if the length of the text exceeds a maximum. If the
* text must be truncated, the string ".." will be rendered, followed by max_len - 2 characters of the provided text.
*/
static void mvaddstr_truncate_leading(int row, int col, const char* str, std::size_t str_len, std::size_t max_len)
{
if (str_len < max_len) {
mvaddstr(row, col, str);
} else {
mvaddstr(row, col, "..");
addnstr(str + 2, max_len - 2);
}
}
/**
* Render the provided text at the specified location, truncating if the length of the text exceeds a maximum. If the
* text must be truncated, the text will be rendered up to max_len - 2 characters and then ".." will be rendered.
*/
static void mvaddstr_truncate_trailing(int row, int col, const char* str, std::size_t str_len, std::size_t max_len)
{
if (str_len < max_len) {
mvaddstr(row, col, str);
} else {
mvaddnstr(row, col, str, max_len - 2);
addstr("..");
}
}
void Line::show (int row, unsigned int proglen)
{
assert (m_pid >= 0);
assert (m_pid <= PID_MAX);
const int column_offset_pid = 0;
const int column_offset_user = column_offset_pid + COLUMN_WIDTH_PID + 1;
const int column_offset_program = column_offset_user + COLUMN_WIDTH_USER + 1;
const int column_offset_dev = column_offset_program + proglen + 2;
const int column_offset_sent = column_offset_dev + COLUMN_WIDTH_DEV + 1;
const int column_offset_received = column_offset_sent + COLUMN_WIDTH_SENT + 1;
const int column_offset_unit = column_offset_received + COLUMN_WIDTH_RECEIVED + 1;
// PID column
if (m_pid == 0)
mvprintw (row, 6, "?");
mvaddch (row, column_offset_pid + COLUMN_WIDTH_PID - 1, '?');
else
mvprintw (row, 0, "%7d", m_pid);
mvprintw (row, column_offset_pid, COLUMN_FORMAT_PID, m_pid);
std::string username = uid2username(m_uid);
mvprintw (row, 8, "%s", username.c_str());
if (strlen (m_name) > proglen) {
// truncate oversized names
char * tmp = strdup(m_name);
char * start = tmp + strlen (m_name) - proglen;
start[0] = '.';
start[1] = '.';
mvprintw (row, 8 + 9, "%s", start);
free (tmp);
} else {
mvprintw (row, 8 + 9, "%s", m_name);
}
mvprintw (row, 8 + 9 + proglen + 2, "%s", devicename);
mvprintw (row, 8 + 9 + proglen + 2 + 6, "%10.3f", sent_value);
mvprintw (row, 8 + 9 + proglen + 2 + 6 + 9 + 3, "%10.3f", recv_value);
mvaddstr_truncate_trailing (row, column_offset_user, username.c_str(), username.size(), COLUMN_WIDTH_USER);
mvaddstr_truncate_leading (row, column_offset_program, m_name, strlen (m_name), proglen);
mvaddstr (row, column_offset_dev, devicename);
mvprintw (row, column_offset_sent, COLUMN_FORMAT_SENT, sent_value);
mvprintw (row, column_offset_received, COLUMN_FORMAT_RECEIVED, recv_value);
if (viewMode == VIEWMODE_KBPS)
{
mvprintw (row, 8 + 9 + proglen + 2 + 6 + 9 + 3 + 11, "KB/sec");
mvaddstr (row, column_offset_unit, "KB/sec");
}
else if (viewMode == VIEWMODE_TOTAL_MB)
{
mvprintw (row, 8 + 9 + proglen + 2 + 6 + 9 + 3 + 11, "MB ");
mvaddstr (row, column_offset_unit, "MB ");
}
else if (viewMode == VIEWMODE_TOTAL_KB)
{
mvprintw (row, 8 + 9 + proglen + 2 + 6 + 9 + 3 + 11, "KB ");
mvaddstr (row, column_offset_unit, "KB ");
}
else if (viewMode == VIEWMODE_TOTAL_B)
{
mvprintw (row, 8 + 9 + proglen + 2 + 6 + 9 + 3 + 11, "B ");
mvaddstr (row, column_offset_unit, "B ");
}
}
@@ -394,16 +436,16 @@ void show_ncurses(Line * lines[], int nproc) {
attron(A_REVERSE);
int totalrow = std::min(rows-1, 3+1+i);
mvprintw (totalrow, 0, " TOTAL %-*.*s %10.3f %10.3f ", proglen, proglen, " ", sent_global, recv_global);
mvprintw (totalrow, 0, " TOTAL %-*.*s %11.3f %11.3f ", proglen, proglen, " ", sent_global, recv_global);
if (viewMode == VIEWMODE_KBPS)
{
mvprintw (3+1+i, cols - 7, "KB/sec ");
mvprintw (3+1+i, cols - COLUMN_WIDTH_UNIT, "KB/sec ");
} else if (viewMode == VIEWMODE_TOTAL_B) {
mvprintw (3+1+i, cols - 7, "B ");
mvprintw (3+1+i, cols - COLUMN_WIDTH_UNIT, "B ");
} else if (viewMode == VIEWMODE_TOTAL_KB) {
mvprintw (3+1+i, cols - 7, "KB ");
mvprintw (3+1+i, cols - COLUMN_WIDTH_UNIT, "KB ");
} else if (viewMode == VIEWMODE_TOTAL_MB) {
mvprintw (3+1+i, cols - 7, "MB ");
mvprintw (3+1+i, cols - COLUMN_WIDTH_UNIT, "MB ");
}
attroff(A_REVERSE);
mvprintw (totalrow+1, 0, "");