97 lines
1.7 KiB
C
97 lines
1.7 KiB
C
#include "page.h"
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void init_page(PAGE *p, int size)
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{
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p->text = (LINE *)malloc(size * sizeof(LINE));
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int i;
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for(i = 0; i < size; i++)
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{
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init_line(p->text + i);
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}
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p->numlines = 0;
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p->size = size;
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} // init_page
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void dest_page(PAGE *p)
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{
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int i;
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for(i = 0; i < p->numlines; i++)
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{
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free(p->text[i].line); // maybe replace with dest_line()
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}
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free(p->text);
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} // dest_page
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// WARNING: Expansion function implemented but not tested
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void insert_line(PAGE *p, int index)
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{
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if( p->numlines >= p->size ) expand_page(p);
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LINE newline;
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init_line(&newline);
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newline.line[0] = '\0';
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int i;
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for(i = p->numlines - 1; i >= index; i--)
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p->text[i + 1] = p->text[i];
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p->text[index] = newline;
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(p->numlines)++;
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} // insert_line
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void remove_line(PAGE *p, int index)
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{
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if( p->numlines > 1 )
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{
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free(p->text[index].line);
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int i;
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for(i = index; i < p->numlines - 1; i++)
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{
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p->text[i] = p->text[i + 1];
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}
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(p->numlines)--;
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}
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} // remove_line
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void expand_page(PAGE *p)
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{
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int newsize = p->size * 2;
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LINE *newline = malloc(newsize * sizeof(LINE));
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int i;
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for(i = 0; i < p->size; i++) // copy old lines
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newline[i] = p->text[i];
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for(i = p->size; i < newsize; i++) // init new lines
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init_line(newline + i);
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p->text = newline;
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p->size = newsize;
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} // expand_page
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// NOTE: This moves the cursor to the end of the displayed text
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void print_page(const PAGE *p, int start, int end)
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{
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int i, line;
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for(i = start, line = 0; i < p->numlines && i < end; i++, line++)
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{
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move(line, 0);
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clrtoeol();
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printw(" %s", p->text[i].line);
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}
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if(start < end)
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{
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move(line, 0);
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clrtoeol(); // if we deleted a line this may be necessary
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move(line-1, 1);
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}
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refresh();
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} // print_page
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