/**
* This is a quick and dirty line editor. Useful when ed fails
* or for a few other other things.
* <p>
*
* This is a very quick and dirty line editor cooked up by
* [als] in half an hour on a not-so-stormy night of 10/12/91
* It uses NO input_to's, so ALL commands are prefixed with the command word
* it was simply intended for those times when ed goes down the
* proverbial gurgler. If you HAVE to use it, set up aliases :)
* commands: r file, w[file], >insert text, /search text,
* number goes to line number, +, -, d, N-> clears line editor
* Have fun, and win awards
* One other possible use for LE is for cute aliases
* @started 10th of December 1991
* @author Ember
*/
private nosave int line;
private nosave string *cfile, cfile_name, _last_search;
protected int le(string s);
int add_command(string str, object ob, string format, function funct);
void create() {
seteuid("PLAYER");
} /* create() */
private void print_line() {
if (line > sizeof(cfile)) {
line = sizeof(cfile);
}
if (!line) {
write("No line.\n");
return;
}
write(extract(" ", 0, 3 - strlen(line + "")) + line + ":" + cfile[line-1] + "\n");
} /* print_line() */
/**
* This method adds in all the commands needed to access le.
*/
protected void le_commands() {
add_command("le", this_object(), "<string>", (: le($4[0]) :));
} /* le_commands() */
/**
* The main access point for le. This takes in the comamnd
* line arg and uses it as it should and does wild and
* exciting thins, especially on those stormy nights...
* @param s the input string to the line editor
* @return 1 if successful, 0 on failure
*/
protected int le(string s) {
int j;
string sB;
if (!pointerp(cfile)) { cfile = ({ }); line = 0; }
if (!s || s == "") { print_line(); return 1; }
if (sscanf(s, "%d", j)) { line = j; print_line(); return 1; }
switch (s[0]) {
case 'd':
if (!line) { notify_fail("Not on a line.\n"); return 0; }
cfile = delete(cfile, line-1, 1);
print_line();
return 1;
case 'N':
cfile = ({ });
line = 0;
cfile_name = 0;
write("Line editor cleared.\n");
return 1;
case '/':
s = extract(s, 1);
if (s == "") {
s = _last_search;
}
_last_search = s;
{
int i, s1, s2;
for (i = line+1; i<= sizeof(cfile); i++) {
if (sscanf(cfile[i-1], "%s"+s+"%s", s1, s2)) { line = i; print_line(); return 1; }
}
write("Search failed.\n");
return 1;
}
case '>':
s = extract(s, 1);
{
string *tmp1, *tmp2;
tmp1 = (line > 1) ? cfile[0..line-2] : ({ });
tmp2 = (line <= sizeof(cfile)) ? cfile[line-1..sizeof(cfile)-1] : ({ });
cfile = tmp1 + ({ s }) + tmp2;
}
line++;
print_line();
return 1;
case 'r':
{
string sA;
sA = extract(s, 1);
while (sA[0] == ' ') sA = extract(sA,1);
sB = this_player()->get_path(sA);
if (!sB) sB = sA;
if (file_size(sB) < 0) { notify_fail("File doesn't exist.\n"); return 0; }
sA = read_file(sB);
cfile = explode(sA, "\n");
line = 1;
}
write("Read file " + sB + ": " + sizeof(cfile) + " lines.\n");
cfile_name = sB;
print_line();
return 1;
case '+':
if (line < sizeof(cfile)) line++;
print_line();
return 1;
case '-':
if (line > 1) line --;
print_line();
return 1;
case 'w':
if (s == "w") {
if (!cfile_name) { notify_fail("No file name.\n"); return 0; }
} else {
s = extract(s,1);
while (s[0] == ' ') s = extract(s, 1);
if (this_player()->get_path(s)) s = this_player()->get_path(s);
cfile_name = s;
}
rm(cfile_name);
write_file(cfile_name, implode(cfile, "\n"));
write("Tried to write file " + cfile_name + ": " + sizeof(cfile) + " lines.\n");
return 1;
case 'z':
{
int q;
q = 20;
while (q-- && line <= sizeof(cfile)) { print_line(); line++; }
line --;
}
return 1;
}
} /* le() */
