add parser loop

[st.git] / std.c

diff --git a/std.c b/std.c
index 5368f67..be3f41a 100644 (file)
--- a/std.c
+++ b/std.c
@@ -13,7 +13,7 @@
 #include <string.h>
 #include <unistd.h>
 
-#define LENGTH(x)      (sizeof (x) / sizeof (x)[0])
+#define LENGTH(x)      (sizeof(x) / sizeof((x)[0]))
 #define MAX(a,b)       (((a) > (b)) ? (a) : (b))
 #define MIN(a,b)       (((a) < (b)) ? (a) : (b))
 
@@ -31,8 +31,6 @@ void shell(void);
 void sigchld(int n);
 char unbuffer(void);
 
-enum { QuestionMark = 1, Digit = 2 };
-
 typedef struct {
        unsigned char data[BUFSIZ];
        int s, e;
@@ -41,10 +39,10 @@ typedef struct {
 
 int cols = 80, lines = 25;
 int cx = 0, cy = 0;
-int c, s;
+int c;
 FILE *fptm = NULL;
 int ptm, pts;
-_Bool bold;
+_Bool bold, digit, qmark;
 pid_t pid;
 RingBuffer buf;
 
@@ -151,28 +149,27 @@ parseesc(void) {
        int arg[16];
 
        memset(arg, 0, LENGTH(arg));
-       s = 0;
        c = getc(fptm);
        switch(c) {
        case '[':
                c = getc(fptm);
                for(j = 0; j < LENGTH(arg);) {
                        if(isdigit(c)) {
-                               s |= Digit;
+                               digit = 1;
                                arg[j] *= 10;
                                arg[j] += c - '0';
                        }
                        else if(c == '?')
-                               s |= QuestionMark; 
+                               qmark = 1;
                        else if(c == ';') {
-                               if(!(s & Digit))
-                                       eprint("syntax error");
-                               s &= ~Digit;
+                               if(!digit)
+                                       eprint("syntax error\n");
+                               digit = 0;
                                j++;
                        }
                        else {
-                               if(s & Digit) {
-                                       s &= ~Digit;
+                               if(digit) {
+                                       digit = 0;
                                        j++;
                                }
                                break;
@@ -309,12 +306,24 @@ unbuffer(void) {
 
 int
 main(int argc, char *argv[]) {
-       fd_set rd;
        if(argc == 2 && !strcmp("-v", argv[1]))
                eprint("std-"VERSION", © 2008 Matthias-Christian Ott\n");
        else if(argc == 1)
                eprint("usage: st [-v]\n");
        getpty();
        shell();
+       fptm = fdopen(ptm, "r+");
+       if(!fptm)
+               eprintn("cannot open slave pty");
+       for(;;) {
+               c = getc(fptm);
+               switch(c) {
+               case '\033':
+                       parseesc();
+                       break;
+               default:
+                       putchar(c);
+               }
+       }
        return 0;
 }