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C & ncurses problem *warning - long source

Hello everyone, I've been working on a simple editor myself and I seem
to be having some problems with ncurses or so. I have been debugging
this program quite a lot trying to detect where the bug is hiding. If
you try to compile it gcc -o rosy rosy.cpp -lncurses and run it with
an input file, the delete and backspace characters function great
however when you start pressing keys like, right left or so to
navigate through the file, it prints ']'. I've been watching the
variables changing too closely but nothing really happens so I suspect
it has maybe something to do with ncurses. At the end of the source
file there is a function called 'print' which sums up the buffer to be
printed on the screen, if you take a look at it before it is returned
you can see that it includes the normal characters and not ']' however
when it is printed the ']''s appear. The source is long and maybe I am
not doing right to paste it here but I will try. Thanks a lot and help
is highly appreciated

p.s sorry for the lack of commenting

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ncurses.h>

#define MAX_WIDTH 300
#define MAX_HEIGHT 3500
#define CTRL(key) ((key) & 0x1f)
#define TABS_DEF 5

class rosyStream {
private:
char buffer[MAX_WIDTH];
public:
bool allocated;
int previous, next;
int cursor;

rosyStream() {
createObj();
}

void createObj() {
strcpy(buffer, "");
allocated = false;
cursor = 0;
previous = -1;
next = -1;
}

int returnCurPos() {
return cursor;
}

bool doBackspace() {
if(cursor 0) {
for(int i = cursor; i < MAX_WIDTH; i++) {
buffer[i - 1] = buffer[i];
if(buffer[i] == '\0') break;
}
cursor--;
return true;
}
return false;
}

void doEnd() {
cursor = strlen(buffer);
}

bool doDelete() {
if(cursor < strlen(buffer)) {
for(int i = cursor; i < MAX_WIDTH; i++) {
buffer[i] = buffer[i + 1];
if(buffer[i] == '\0') break;
}
return true;
}
return false;
}

bool left() {
if(cursor 0) {
cursor--;
return true;
}
else return false;
}

bool right() {
if(cursor < strlen(buffer)) {
cursor++;
return true;
}
else return false;
}

void setCursor(int position) {
cursor = position;
}

int retLength() {
return strlen(buffer);
}

void cat(char *line) {
strcat(buffer, line);
}

char *returnBuf() {
return buffer;
}

void insert(char c) {
int s;
if(cursor == strlen(buffer)) {
buffer[cursor] = c;
cursor++;
buffer[cursor] = '\0';
} else {
for(s = strlen(buffer) + 1; s >= cursor; s--)
buffer[s] = buffer[s - 1];
buffer[cursor] = c;
cursor++;
s = strlen(buffer);
buffer[s] = '\0';
}
}

char *subStr(int init, int w) {
char retBuf[MAX_WIDTH] = "";
strcpy(retBuf, "");
int i;
for(i = 0; i <= w; i++) {
retBuf[i] = buffer[init + i];
if(buffer[init + i] == '\0') break;
}
retBuf[i] = '\0';
return retBuf;
}

char getChar(int pos) {
return buffer[pos];
}

void clear(int index) {
buffer[index] = '\0';
}

void doHome() {
cursor = 0;
}
};

rosyStream table[MAX_HEIGHT];

typedef struct rosy {
FILE *source;
int BACKGROUND_COLO R;
int FOREGROUND_COLO R;
int TABS;
int WIDTH;
int HEIGHT;
char filename[128];
char bBuffer[MAX_WIDTH];
} ROSY_DATA;

ROSY_DATA *initialize_ros y();
void parseIntoBuffer (ROSY_DATA *);
void edit(ROSY_DATA *);
char *print(ROSY_DAT A *,char *, int);

void setfontcolor(in t color) {
printf("%c[3%dm", 27, color);
}

void setbgcolor(int color) {
printf("%c[4%dm]", 27, color);
}

void __quit() {
endwin();
exit(0);
}

int yy = 0;
int c = 0;
int TOP_LINE = 0;
int counter = 0;

int main(int argc, char **argv) {
if(argc != 2 && argc != 1) {
fprintf(stderr, "usage : %s source\n", argv[0]);
exit(1);
}

ROSY_DATA *data = initialize_rosy ();

data->TABS = TABS_DEF;
data->HEIGHT = 24;
data->WIDTH = 80;
strcpy(data->filename, "");
if(argc == 2) {
data->source = fopen(argv[1], "r");
if(data->source == NULL) {
fprintf(stderr, "+ rosy[error] - cannot find the
specified file [ %s ]\n", argv[1]);
exit(1);
}
strncpy(data->filename, argv[1], strlen(argv[1]));
parseIntoBuffer (data);
}

edit(data);

return 0;
}

ROSY_DATA *initialize_ros y() {
return ((ROSY_DATA *)malloc(sizeof (ROSY_DATA)));
}

void parseIntoBuffer (ROSY_DATA *mydata) {
char tmp[MAX_WIDTH] = "";
char secTmp[MAX_WIDTH];
int newPos = 0;
int ptr = 0;
table[0].createObj();

while(!feof(myd ata->source)) {
fgets(tmp, MAX_WIDTH, mydata->source);
table[ptr].createObj();
newPos = 0;

secTmp[0] = '\0';

for(int i = 0; i < strlen(tmp); i++) {
if(tmp[i] == 10 || tmp[i] == 13) {
secTmp[newPos++] = '\0';
} else if(tmp[i] == 9) {
for(int j = 0; j < mydata->TABS; j++) {
secTmp[newPos++] = ' ';
}
} else {
secTmp[newPos++] = tmp[i];
}
}
secTmp[newPos] = '\0';
table[ptr].cat(secTmp);
if(ptr 0) {
table[ptr].previous = ptr - 1;
table[ptr - 1].next = ptr;
}

table[ptr].allocated = true;
ptr++;
if(ptr == MAX_HEIGHT) {
printf("File too big [ max_width = %d], [max_height =
%d ]\n", MAX_WIDTH, MAX_HEIGHT);
getch();
}
}
fclose(mydata->source);
}

void edit(ROSY_DATA *data) {
int input;
int v = 0;

(void) initscr();
keypad(stdscr, TRUE);
(void) def_prog_mode() ;
(void) nonl();
(void) cbreak();
(void) noecho();
start_color();

data->BACKGROUND_COL OR = 0;
data->FOREGROUND_COL OR = 8;

setbgcolor(data->BACKGROUND_COL OR);
setfontcolor(da ta->FOREGROUND_COL OR);

data->WIDTH = COLS - 1;
data->HEIGHT = LINES - 2;

for(int i = 0; i < MAX_WIDTH; i++)
data->bBuffer[i] = ' ';
data->bBuffer[data->WIDTH] = '\0';

print(data, "", 1);
refresh();

c = 0;

do {
input = getch();
if(input == 127 || input == KEY_BACKSPACE) {
if(!table[c].doBackspace() && table[c].previous -1) {

table[table[c].previous].setCursor(tabl e[table[c].previous].retLength());

table[table[c].previous].cat(table[c].returnBuf());
table[c].allocated = false;
table[table[c].previous].next = table[c].next;
if(table[c].next -1)
table[table[c].next].previous =
table[c].previous;
c = table[c].previous;
}
}
else if(input == KEY_RESIZE || input == -1) {
data->bBuffer[data->WIDTH] = ' ';
data->WIDTH = COLS - 1;
data->bBuffer[data->WIDTH]= '\0';
data->HEIGHT = LINES - 2;
for(int i = 0; i < MAX_WIDTH; i++)
data->bBuffer[i] = ' ';
data->bBuffer[data->WIDTH] = '\0';
}
else if(input == 330) {
if(!table[c].doDelete() && table[c].next -1) {
table[c].cat(table[table[c].next].returnBuf());
table[table[c].next].allocated = false;
table[c].next = table[table[c].next].next;
table[table[c].next].previous = c;
}
}
else if(input == KEY_NPAGE) {
for(int i = 0; i < data->HEIGHT; i++) {
if(table[c].next == -1) break;
c = table[c].next;
}
}
else if(input == KEY_PPAGE) {
for(int i = 0; i < data->HEIGHT; i++) {
if(table[c].previous == -1) break;
c = table[c].previous;
}
}
else if(input == 13) {
bool flag = false;
int i, j;

for(i = 1; i < MAX_HEIGHT; i++)
if(table[i].allocated == false) {
flag = true;
break;
}
if(flag == true) {
table[i].createObj();
table[i].allocated = true;
table[i].next = table[c].next;
if(table[i].next -1)
table[table[i].next].previous = i;
table[i].previous = c;
table[c].next = i;
table[i].setCursor(0);
for(j = table[c].returnCurPos() ; j <
table[c].retLength(); j++)
table[i].insert(table[c].getChar(j));
table[c].clear(table[c].returnCurPos() );
table[i].setCursor(0);
c = i;
}
}
else if(input == KEY_LEFT) {
if(!table[c].left()) {
if(table[c].previous -1) {
c = table[c].previous;
table[c].setCursor(tabl e[c].retLength());
}
}
}
else if(input == KEY_DOWN) {
if(table[c].next -1) {
if(table[table[c].next].retLength() <
table[c].returnCurPos() )

table[table[c].next].setCursor(tabl e[table[c].next].retLength());
else

table[table[c].next].setCursor(tabl e[c].returnCurPos() );
c = table[c].next;
}
}
else if(input == KEY_UP) {
if(table[c].previous -1) {
if(table[table[c].previous].retLength() <
table[c].returnCurPos() )

table[table[c].previous].setCursor(tabl e[table[c].previous].retLength());
else

table[table[c].previous].setCursor(tabl e[c].returnCurPos() );
c = table[c].previous;
}
}
else if(input == 9 || input == 11) {
for(int i = 0; i < TABS_DEF; i++)
table[c].insert(' ');
}
else if(input == KEY_RIGHT) {
if(!table[c].right()) {
if(table[c].next -1) {
c = table[c].next;
table[c].setCursor(0);
}
}
}
else if(input == KEY_F(4) || (v == 2 && input == 'S'))
__quit();
else if(input == KEY_F(3) || (v == 2 && input == 'R')) {
if(strcmp(data->filename, "") == 0) {
strcpy(data->filename, print(data,"Fil ename: ",
2));
} else {
FILE *save;
save = fopen(data->filename, "w");
if(!save) {
char local[128];
snprintf(local, 128, "+ rosy[error] - I can't
save the file %s\n", data->filename);
print(data, local, 1);
}
else {
char buf[MAX_WIDTH];
int i = 0;
do {
strcpy(buf, table[i].returnBuf());
strcat(buf, "\n");
fputs(buf, save);
i = table[i].next;
} while(i -1);
fclose(save);
print(data, "File saved.", 1);
}
}
}
else if(input == 27 || input == 33) {
v = 1;
}
else if(input < 30);
else {
if(v == 1 && (input == 'O' || input == '['))
v = 2;
else if(v == 2 && (input == 'F' || input == '8'))
{
if(input == '8')
v = 4;
else {
table[c].doEnd();
v = 0;
}
}
else if(v == 2 && (input == 'H' || input == '7')) {
if(input == '7') {
v = 3;
} else {
table[c].doHome();
v = 0;
}
}
else if(v == 4 && input == '~') {
table[c].doEnd();
v = 0;
}
else if(v = 3 && input == '~') {
table[c].doHome();
v = 0;
}
else if(v == 2 && input == 97) {
if(table[c].previous -1) {
if(table[table[c].previous].retLength() <
table[c].returnCurPos() )

table[table[c].previous].setCursor(tabl e[table[c].previous].retLength());
else

table[table[c].previous].setCursor(tabl e[c].returnCurPos() );
c = table[c].previous;
}
v = 0;
}
else if(v == 2 && input == 99) {
if(!table[c].right()) {
if(table[c].next -1) {
c = table[c].next;
table[c].setCursor(0);
}
}
v = 0;
}
else if(v == 2 && input == 98) {
if(table[c].next -1) {
if(table[table[c].next].retLength() <
table[c].returnCurPos() )

table[table[c].next].setCursor(tabl e[table[c].next].retLength());
else

table[table[c].next].setCursor(tabl e[c].returnCurPos() );
c = table[c].next;
}
v = 0;
}
else if(v == 2 && input == 100) {
if(!table[c].left()) {
if(table[c].previous -1) {
c = table[c].previous;

table[c].setCursor(tabl e[c].retLength());
}
}
v = 0;
}
else {
v = 0;
table[c].insert(input);
}
}

if(table[c].returnCurPos() yy + data->WIDTH - 1)
yy = table[c].returnCurPos() - data->WIDTH;
else if(table[c].returnCurPos() < yy) {
yy = table[c].returnCurPos() ;
}

print(data, "", 1);
refresh();
++counter;
} while(input != CTRL('q') && input != CTRL('Q'));
__quit();
}

char *print(ROSY_DAT A *data, char *buf, int t) {
int a = -1, i, z;
char outBuffer[500][500];
char local[MAX_WIDTH];

for(int tmp = 0; tmp <= data->HEIGHT; tmp++)
strcpy(outBuffe r[tmp], data->bBuffer);

local[0] = '\0';
z = 0;
i = TOP_LINE;
do {
z++;
if(i == c) a = z;
} while(i -1 && z < data->HEIGHT);
if(a == -1) {
z = 0;
i = TOP_LINE;
while(table[i].next != -1 && i != c) {
i = table[i].next;
z++;
if(i == c) a = z;
if(z data->HEIGHT) {
TOP_LINE = table[TOP_LINE].next;
}
}
if(a == -1) {
i = TOP_LINE;
while(table[i].previous != -1 && i != c) {
i = table[i].previous;
TOP_LINE = i;
}
}
}
a = -1, z = 0, i = TOP_LINE;
do {
strcpy(outBuffe r[z], table[i].subStr(yy, data->WIDTH));
outBuffer[z][strlen(outBuffe r[z])] = ' ';
outBuffer[z][data->WIDTH + 1] = '\0';
z++;
if(i == c) a = z;
i = table[i].next;
} while(i -1 && z <= data->HEIGHT);

for(int tmp = 0; tmp <= data->HEIGHT; tmp++) {
move(tmp, 0);
printw("%s ", outBuffer[tmp]);
}

move(data->HEIGHT + 1, 0);
wattron(stdscr, A_REVERSE);
printw("%s ", data->bBuffer);
move(data->HEIGHT + 1, 0);
if(strlen(buf) 0)
printw("Char code: %i | Column: %i | %s",
table[c].getChar(table[c].returnCurPos() ),
table[c].returnCurPos() + 1, buf);
else
printw("Char code: %d | Column: %i | F3 - Save F4 -
Exit", table[c].getChar(table[c].returnCurPos() ),
table[c].returnCurPos() + 1);
if(t == 2) {
refresh();
echo();
getstr(local);
noecho();
printw("%s", local);
getch();
}
setbgcolor(data->BACKGROUND_COL OR);
setfontcolor(da ta->FOREGROUND_COL OR);
wattroff(stdscr , A_REVERSE);

move(a - 1, table[c].returnCurPos() - yy);

if(!strcmp(buf, "") == 0 && t == 1)
getch();

return local;
}

Jun 6 '07 #1
6 1846
In article <11************ *********@p77g2 000hsh.googlegr oups.com>,
<di************ *****@gmail.com wrote:
....
>#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ncurses.h>

#define MAX_WIDTH 300
#define MAX_HEIGHT 3500
#define CTRL(key) ((key) & 0x1f)
#define TABS_DEF 5

class rosyStream {
private:
char buffer[MAX_WIDTH];
public:
bool allocated;
int previous, next;
int cursor;
I take it, google/gmail doesn't support cross-posting...

Jun 6 '07 #2
sorry I mean g++ -o rosy rosy.cpp -lncurses not gcc. Such a bad habit
really :p

Jun 6 '07 #3
On Wed, 06 Jun 2007 09:46:34 -0700, in comp.lang.c ,
di************* ****@gmail.com wrote:
>Hello everyone, I've been working on a simple editor myself and I seem
to be having some problems with ncurses or so.
curses / ncurses isn't actually part of the C language. This also
looks more like an environmental issue, eg your terminal isn't
configured for the right keyboard escapes.

You will probably have more luck in comp.unix.progr ammer, where this
is probably more topical.
--
Mark McIntyre

"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it."
--Brian Kernighan
Jun 6 '07 #4
Thanks for the reply, I will probably ask for help in
comp.unix.progr ammer, and by the way I truly like the quote you have
there :D

Jun 6 '07 #5
di************* ****@gmail.com wrote:
>
sorry I mean g++ -o rosy rosy.cpp -lncurses not gcc. Such a bad
habit really :p
Ignore McCormack, he is a troll. Provide adequate quotations to
make your article stand alone.

--
<http://www.cs.auckland .ac.nz/~pgut001/pubs/vista_cost.txt>
<http://www.securityfoc us.com/columnists/423>
<http://www.aaxnet.com/editor/edit043.html>
<http://kadaitcha.cx/vista/dogsbreakfast/index.html>
cbfalconer at maineline dot net

--
Posted via a free Usenet account from http://www.teranews.com

Jun 7 '07 #6
di************* ****@gmail.com wrote:
>
Hello everyone, I've been working on a simple editor myself and I
seem to be having some problems with ncurses or so. I have been
debugging this program quite a lot trying to detect where the bug
is hiding. If ....
Wrong group. ncurses is not in the standard library, thus
off-topic. Try a group that deals with your system.

--
<http://www.cs.auckland .ac.nz/~pgut001/pubs/vista_cost.txt>
<http://www.securityfoc us.com/columnists/423>
<http://www.aaxnet.com/editor/edit043.html>
<http://kadaitcha.cx/vista/dogsbreakfast/index.html>
cbfalconer at maineline dot net

--
Posted via a free Usenet account from http://www.teranews.com

Jun 7 '07 #7

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I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
2
2335
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2007
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

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