共有回帖数 0 个
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#define DEL 263
#define ENTER 10
#define UP 259
#define DOWN 258
#define LEFT 260
#define RIGHT 261
#define COMMAND 58
#define BUF_SIZE 256
#define LINE_SIZE 1000
#define MIN(x,y) ((x)(y)?(x):(y))
#include"procerr.h"
#includecurses.h
#includestring.h
char big_mem[10000],buf[BUF_SIZE];
chtype ch,ch_buf[BUF_SIZE];
int count[LINE_SIZE];
bool show=1,save=0,out=0;
int save_x=0,save_y=0;
int enter_x,del_x;
int fd=-1;
int pad_x=500,pad_y=1000;
int change_y=0,nread,nwrite,offset=0,cursor_offset=0,line=0;
WINDOW*pad,*command,*info;
static void func_step(void);
static void func_del_ch(void);
static void func_del_ln(void);
static void func_enter(void);
static void func_change_down(void);
static void func_change_up(void);
static void func_command(void);
static void func_text_save(void);
static void func_pad_save(int);
static bool func_text_load(void);
static bool func_pad_load(void);
static void func_count_line(void);
static void func_info(void);
int main(int argc,char*argv[]){
initscr();
noecho();//不回显
cbreak();//预处理模式
keypad(stdscr,TRUE);//启用方向健
refresh();
raw();//关闭特殊键
fd=open(argv[1],O_RDWR|O_CREAT,PERM_FILE);
func_text_load();
func_pad_load();
func_count_line();
func_info();
while(1)
{
switch(ch=getch()){
case -1:
case 410:
func_pad_load();
if(show)func_info();
break;
case DEL:
if(save_x0)
{
func_del_ch();
count[save_y+change_y]--;
cursor_offset--;
func_pad_save(0);
if(show)func_info();
}
else if(save_y0)
{
int i;
del_x=count[save_y+change_y-1];
count[save_y+change_y-1]+=count[save_y+change_y]-1;
for(i=save_y+change_y;iline-1;i++)
count=count[i+1];
line--;
func_del_ln();
cursor_offset--;
func_pad_save(0);
if(show)func_info();
}
break;
case DOWN:
if(save_y LINES-1){
cursor_offset+=count[save_y+change_y]-save_x+MIN(count[save_y+change_y+1]-1,save_x);/////////////////////
save_y++;
wmove(pad,save_y,(save_x=MIN(count[save_y+change_y]-1,save_x)));
prefresh(pad,0,0,0,0,LINES-1,COLS-1);
}
else if(save_y==LINES-1 && (save_y+change_y) (line-1) ){
func_change_down();
}
if(show)func_info();
break;
case UP:
if(save_y0){
cursor_offset-=save_x+count[save_y+change_y-1];
cursor_offset+=MIN(count[save_y+change_y-1]-1,save_x);
save_y--;
wmove(pad,save_y,(save_x=MIN(count[change_y+save_y]-1,save_x)));
prefresh(pad,0,0,0,0,LINES-1,COLS-1);
}
else if(save_y==0 && change_y0){
func_change_up();
}
if(show)func_info();
break;
case LEFT:
if(save_x0){save_x--;func_step();cursor_offset--;}
if(show)func_info();
break;
case RIGHT:
if(save_xcount[change_y+save_y]-1){save_x++;func_step();cursor_offset++;}
if(show)func_info();
break;
case ENTER://不支持卷屏的func_enter
func_enter();
cursor_offset++;
func_pad_save(1);
if(show)func_info();
break;
case COMMAND:
func_command();
if(show)func_info();
else func_step();
if(save)func_text_save();
if(out) goto EXAPLEM_END;
break;
default:
winsch(pad,ch);
count[save_y+change_y]++;
if(save_xCOLS){
save_x++;func_step();
cursor_offset++;
func_pad_save(1);
}
else if((save_y+change_y)LINES){
save_x=0;save_y++;func_step();//不支持卷屏
}
if(show)func_info();
break;
}
}
EXAPLEM_END:
noraw();
echo();
nocbreak();
delwin(pad);
endwin();
return 0;
EC_CLEANUP_BGN
endwin();
return 1;
EC_CLEANUP_END
}
static void func_step()
{
wmove(pad,save_y,save_x);
if(show)prefresh(pad,0,0,0,0,LINES,COLS-5);
else prefresh(pad,0,0,0,0,LINES,COLS);
}
static void func_del_ch()//offset_end
{
save_x--;
func_step();
wdelch(pad);
prefresh(pad,0,0,0,0,LINES-1,COLS-1);
}
static void func_del_ln()//offset_end
{
int i=0;
save_x=COLS-1;
wmove(pad,save_y,save_x);
memset(ch_buf,' ',BUF_SIZE);
while(save_x0 && winch(pad)==' '){
save_x--;
wmove(pad,save_y,save_x);
}
//准备复制
buf[save_x+1]=' ';
for(;save_x=0;){
ch_buf[save_x]=winch(pad);
save_x--;
i++;
wmove(pad,save_y,save_x);
}
//复制了一个串包含回车
wdeleteln(pad);
save_y--;
save_x=del_x-1;
wmove(pad,save_y,save_x);
//准备黏贴
waddchstr(pad,ch_buf);
//实施黏贴
prefresh(pad,0,0,0,0,LINES-1,COLS-1);
}
static void func_enter(void)
{
int i;
if(lineLINE_SIZE-1){
line++;
for(i=line-1;isave_y+1;i--)
count=count[i-1];
count[save_y+1]=count[save_y]-save_x;
count[save_y]=save_x+1;//加了回车
enter_x=save_x;
ch_buf[save_x]=' ';
save_x--;
func_step();
for(;save_x=0;){
ch_buf[save_x]=winch(pad);
save_x--;
func_step();
}
winsertln(pad);
waddchstr(pad,ch_buf);
save_y++;
wmove(pad,save_y,(save_x=enter_x));
while(save_x0)func_del_ch();
prefresh(pad,0,0,0,0,LINES-1,COLS-1);
return;
}
else
return;
}
static void func_command(void)
{
int i;
command=newwin(1,160,LINES-1,0);
mvwprintw(command,0,0,"command:");
wmove(command,0,8);
wrefresh(command);
for(i=0,enter_x=8;(ch=getch())!='n';i++){
if(ch==DEL){
if(enter_x8)enter_x--;
wmove(command,0,enter_x);
wdelch(command);
wrefresh(command);
}
else if(ch='a' && ch='z'){
buf=(char)ch;
waddch(command,ch);
enter_x++;
wmove(command,0,enter_x);
wrefresh(command);
}
}
buf=' ';
if(strcmp(buf,"q")==0) out=1;
else if(strcmp(buf,"w")==0) save=1;
else if( strcmp(buf,"wq")==0) out=save=1;
else if(strcmp(buf,"i")==0) {
if(show)show--;else show++;
}
prefresh(pad,0,0,0,0,LINES-1,COLS-1);
}
static void func_pad_save(int add_or_not)
{
int i;
if(add_or_not==1){
cursor_offset--;
big_mem[strlen(big_mem)+1]=' ';
for(i=strlen(big_mem);icursor_offset;i--)
big_mem=big_mem[i-1];
big_mem[cursor_offset]=ch;
cursor_offset++;
}
else{
for(i=cursor_offset;istrlen(big_mem)-1;i++)
big_mem=big_mem[i+1];
big_mem=' ';
}
}
static void func_text_save(void)//将数组保存到文本之中
{
lseek(fd,0,SEEK_SET);
write(fd,big_mem,strlen(big_mem));
}
static bool func_text_load(void)
{
memset(buf,' ',strlen(buf));
memset(big_mem,' ',strlen(big_mem));
while((nread=read(fd,buf,BUF_SIZE))0){
strcat(big_mem,buf);
memset(buf,' ',strlen(buf));
}
return 0;
EC_CLEANUP_BGN
return -1;
EC_CLEANUP_END
}
static bool func_pad_load(void)//每次根据cursor_offset来设置光标
{
int x,y,off;
static first=1;
pad=newpad(LINES,COLS);
wprintw(pad,"%s",big_mem+offset);
if(first){
wmove(pad,save_y,save_x);
prefresh(pad,0,0,0,0,LINES,COLS);
first=0;
}
else{
off=offset;
for(y=0;off=cursor_offset;y++)
off+=count[y+change_y];
y--;
off-=count[y+change_y];
x=cursor_offset-off;
save_y=y;
save_x=x;
wmove(pad,save_y,save_x);
prefresh(pad,0,0,0,0,LINES,COLS);
}
return 0;
EC_CLEANUP_BGN
return -1;
EC_CLEANUP_END
}static void func_change_down(void)
{
cursor_offset+=count[save_y+change_y]-save_x+MIN(count[save_y+change_y+1]-1,save_x);/////////////////////
offset+=count[change_y];
change_y++; //BUG
pad=newpad(LINES,COLS);
wprintw(pad,"%s",big_mem+offset);
wmove(pad,save_y,(save_x=MIN(save_x,count[save_y+change_y]-1)));//让其跳到下一行的末尾
prefresh(pad,0,0,0,0,LINES,COLS);
}
static void func_change_up(void)
{
cursor_offset-=save_x+count[save_y+change_y-1];
cursor_offset+=MIN(count[save_y+change_y-1]-1,save_x);
change_y--; //BUG
offset-=count[change_y];
pad=newpad(LINES,COLS);
wprintw(pad,"%s",big_mem+offset);
wmove(pad,save_y,save_x);
prefresh(pad,0,0,0,0,LINES,COLS);
}
static void func_count_line(void) //BUG 如果只有1行并且其中没有n的时候，无法建立count数组,最后一行无法建立
{
int i,pre=0,cur=0;
for(i=0;istrlen(big_mem);i++)
if(big_mem=='n'|| big_mem==' '){
cur=i;
count[line]=cur-pre+1;
pre=cur+1;
line++;
}
}
static void func_info()
{
int i;
info=newwin(LINES,8,0,COLS-8);
mvwprintw(info,0,0,"%d:%d",cursor_offset,count[change_y]);
for(i=1;iMIN(line,LINES);i++){
mvwprintw(info,i,0,"%d",count[i+change_y]);
}
wrefresh(info);
wmove(pad,save_y,save_x);
prefresh(pad,0,0,0,0,LINES,COLS-9);
}
自己用linux下curses库写的一个文本编辑器，实现了基本的光标操作，del，enter，打开，保存，显示每行长度等功能。有几个BUG - - 写了5天 差点精神崩溃
楼主 2015-12-10 13:33 回复
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