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created header, can now delete lines

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This commit is contained in:
Mazar Farran 2014-09-21 19:02:04 -07:00
parent 4c314d8bf7
commit 99353ed222
2 changed files with 89 additions and 45 deletions
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98
text.c
View File

@ -1,12 +1,4 @@
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <ncurses.h> // -lncurses
#define PAGE_SIZE 500
#define LINE_SIZE 128
#define WIN_SIZE LINES - 2
#include "text.h"
/**
* Word Processing Program
@ -16,27 +8,6 @@
* -Loading
**/
typedef struct
{
char *line;
int size;
} LINE;
typedef struct
{
LINE *text; // lines of text
int numlines;
} PAGE;
void load_file(int argc, char **argv, PAGE *p);
void save_file(int argc, char **argv, PAGE *p);
void init_page(PAGE *p);
void dest_page(PAGE *p);
void insert(LINE *s, char c, int index); // inserts to string
void remove_char(LINE *s, int index);
void expand(LINE *s);
void print_page(const PAGE *p);
int main(int argc, char *argv[])
{
PAGE page;
@ -56,7 +27,7 @@ int main(int argc, char *argv[])
mvprintw(LINES - 1, 0, "Press F4 to quit.");
attroff(A_REVERSE);
print_page(&page);
print_page(&page, 0, WIN_SIZE);
int y, x;
getyx(stdscr, y, x);
@ -70,10 +41,16 @@ int main(int argc, char *argv[])
goto end;
break;
case KEY_UP:
if( y >= 0 ) move(--y, x);
if( y > 0 ) --y;
if( x > strlen(page.text[y].line) + 1 ) // cursor adjusts to smaller
x = strlen(page.text[y].line) + 1; // lines
move(y, x);
break;
case KEY_DOWN:
if( y < WIN_SIZE ) move(++y, x);
if( y < WIN_SIZE ) ++y;
if( x > strlen(page.text[y].line) + 1 )
x = strlen(page.text[y].line) + 1;
move(y, x);
break;
case KEY_LEFT:
if(x - 1 > 0)
@ -86,16 +63,27 @@ int main(int argc, char *argv[])
case KEY_DC:
case 127: // backspace key...
case KEY_BACKSPACE:
remove_char(&page.text[y], x - 1);
print_page(&page);
move(y, --x);
if(page.text[y].line[x - 2] == '\0')
{
remove_line(&page, y);
if( y > 0 ) --y;
if( x > strlen(page.text[y].line) + 1 )
x = strlen(page.text[y].line) + 1;
}
else
{
remove_char(&page.text[y], x - 2); // why 2?
if( x > 0 ) x--;
}
print_page(&page, 0, WIN_SIZE);
move(y, x);
refresh();
break;
default: // all other chars
if( isprint(ch) )
{
insert(&page.text[y], ch, x - 1);
print_page(&page);
print_page(&page, 0, WIN_SIZE);
move(y, ++x);
refresh();
}
@ -185,13 +173,18 @@ void insert(LINE *s, char c, int index)
s->line[index] = c;
} // insert
// removes a char from line, if it's the last char '\0'
// then it calls remove_line
void remove_char(LINE *s, int index)
{
int i;
int len = strlen(s->line);
for(i = index; i < len; i++)
s->line[i] = s->line[i + 1];
} // remove
//if(s->line[index] != '\0')
//{
int i;
int len = strlen(s->line);
for(i = index; i < len; i++)
s->line[i] = s->line[i + 1];
//}
} // remove_char
// expands size of line
void expand(LINE *s)
@ -204,9 +197,24 @@ void expand(LINE *s)
s->size = new_size;
} // expand
void print_page(const PAGE *p)
void remove_line(PAGE *p, int index)
{
free(p->text[index].line);
int i;
for(i = index; i < p->numlines - 1; i++)
{
p->text[i] = p->text[i + 1];
}
(p->numlines)--;
} // remove_line
void print_page(const PAGE *p, int start, int end)
{
int i;
for(i = 0; i < p->numlines && i < WIN_SIZE; i++)
mvprintw(i, 1, "%s ", p->text[i].line);
for(i = start; i < p->numlines && i < end; i++)
{
move(i, 1);
clrtoeol();
printw("%s ", p->text[i].line);
}
}

36
text.h Normal file
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@ -0,0 +1,36 @@
#ifndef TEXT_H
#define TEXT_H
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <ncurses.h> // -lncurses
#define PAGE_SIZE 500
#define LINE_SIZE 128
#define WIN_SIZE LINES - 2
typedef struct
{
char *line;
int size;
} LINE;
typedef struct
{
LINE *text; // lines of text
int numlines;
} PAGE;
void load_file(int argc, char **argv, PAGE *p);
void save_file(int argc, char **argv, PAGE *p);
void init_page(PAGE *p);
void dest_page(PAGE *p);
void insert(LINE *s, char c, int index); // inserts to string
void remove_char(LINE *s, int index);
void remove_line(PAGE *p, int index);
void expand(LINE *s);
void print_page(const PAGE *p, int start, int end);
#endif