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Diff: string.cpp
- Revision:
- 0:4ab1392a0142
diff -r 000000000000 -r 4ab1392a0142 string.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/string.cpp Sun Oct 07 11:49:09 2012 +0000
@@ -0,0 +1,165 @@
+#include "string.h"
+
+tp_obj tp_string_t(TP, int n) {
+ tp_obj r = tp_string_n(0,n);
+ r.string.info = (_tp_string*)tp_malloc(sizeof(_tp_string)+n);
+ r.string.val = r.string.info->s;
+ return r;
+}
+
+tp_obj tp_printf(TP, char const *fmt,...) {
+ int l;
+ tp_obj r;
+ char *s;
+ va_list arg;
+ va_start(arg, fmt);
+ l = vsnprintf(NULL, 0, fmt,arg);
+ r = tp_string_t(tp,l);
+ s = r.string.info->s;
+ va_end(arg);
+ va_start(arg, fmt);
+ vsprintf(s,fmt,arg);
+ va_end(arg);
+ return tp_track(tp,r);
+}
+
+int _tp_str_index(tp_obj s, tp_obj k) {
+ int i=0;
+ while ((s.string.len - i) >= k.string.len) {
+ if (memcmp(s.string.val+i,k.string.val,k.string.len) == 0) {
+ return i;
+ }
+ i += 1;
+ }
+ return -1;
+}
+
+tp_obj tp_join(TP) {
+ tp_obj delim = TP_OBJ();
+ tp_obj val = TP_OBJ();
+ int l=0,i;
+ tp_obj r;
+ char *s;
+ for (i=0; i<val.list.val->len; i++) {
+ if (i!=0) { l += delim.string.len; }
+ l += tp_str(tp,val.list.val->items[i]).string.len;
+ }
+ r = tp_string_t(tp,l);
+ s = r.string.info->s;
+ l = 0;
+ for (i=0; i<val.list.val->len; i++) {
+ tp_obj e;
+ if (i!=0) {
+ memcpy(s+l,delim.string.val,delim.string.len); l += delim.string.len;
+ }
+ e = tp_str(tp,val.list.val->items[i]);
+ memcpy(s+l,e.string.val,e.string.len); l += e.string.len;
+ }
+ return tp_track(tp,r);
+}
+
+tp_obj tp_string_slice(TP,tp_obj s, int a, int b) {
+ tp_obj r = tp_string_t(tp,b-a);
+ char *m = r.string.info->s;
+ memcpy(m,s.string.val+a,b-a);
+ return tp_track(tp,r);
+}
+
+tp_obj tp_split(TP)
+{
+ tp_obj v = TP_OBJ();
+ tp_obj d = TP_OBJ();
+ tp_obj r = tp_list(tp);
+
+ int i;
+ while ((i=_tp_str_index(v,d))!=-1) {
+ _tp_list_append(tp,r.list.val,tp_string_slice(tp,v,0,i));
+ v.string.val += i + d.string.len; v.string.len -= i + d.string.len;
+/* tp_grey(tp,r); // should stop gc or something instead*/
+ }
+ _tp_list_append(tp,r.list.val,tp_string_slice(tp,v,0,v.string.len));
+/* tp_grey(tp,r); // should stop gc or something instead*/
+ return r;
+}
+
+
+tp_obj tp_find(TP) {
+ tp_obj s = TP_OBJ();
+ tp_obj v = TP_OBJ();
+ return tp_number(_tp_str_index(s,v));
+}
+
+tp_obj tp_str_index(TP) {
+ tp_obj s = TP_OBJ();
+ tp_obj v = TP_OBJ();
+ int n = _tp_str_index(s,v);
+ if (n >= 0) { return tp_number(n); }
+ tp_raise(tp_None,"tp_str_index(%s,%s)",s,v);
+}
+
+tp_obj tp_str2(TP) {
+ tp_obj v = TP_OBJ();
+ return tp_str(tp,v);
+}
+
+tp_obj tp_chr(TP) {
+ int v = TP_NUM();
+ return tp_string_n(tp->chars[(unsigned char)v],1);
+}
+tp_obj tp_ord(TP) {
+ char const *s = TP_STR();
+ return tp_number((unsigned char)s[0]);
+}
+
+tp_obj tp_strip(TP) {
+ char const *v = TP_STR();
+ int i, l = strlen(v); int a = l, b = 0;
+ tp_obj r;
+ char *s;
+ for (i=0; i<l; i++) {
+ if (v[i] != ' ' && v[i] != '\n' && v[i] != '\t' && v[i] != '\r') {
+ a = _tp_min(a,i); b = _tp_max(b,i+1);
+ }
+ }
+ if ((b-a) < 0) { return tp_string(""); }
+ r = tp_string_t(tp,b-a);
+ s = r.string.info->s;
+ memcpy(s,v+a,b-a);
+ return tp_track(tp,r);
+}
+
+
+tp_obj tp_replace(TP) {
+ tp_obj s = TP_OBJ();
+ tp_obj k = TP_OBJ();
+ tp_obj v = TP_OBJ();
+ tp_obj p = s;
+ int i,n = 0;
+ int c;
+ int l;
+ tp_obj rr;
+ char *r;
+ char *d;
+ tp_obj z;
+ while ((i = _tp_str_index(p,k)) != -1) {
+ n += 1;
+ p.string.val += i + k.string.len; p.string.len -= i + k.string.len;
+ }
+/* fprintf(stderr,"ns: %d\n",n); */
+ l = s.string.len + n * (v.string.len-k.string.len);
+ rr = tp_string_t(tp,l);
+ r = rr.string.info->s;
+ d = r;
+ z = p = s;
+ while ((i = _tp_str_index(p,k)) != -1) {
+ p.string.val += i; p.string.len -= i;
+ memcpy(d,z.string.val,c=(p.string.val-z.string.val)); d += c;
+ p.string.val += k.string.len; p.string.len -= k.string.len;
+ memcpy(d,v.string.val,v.string.len); d += v.string.len;
+ z = p;
+ }
+ memcpy(d,z.string.val,(s.string.val + s.string.len) - z.string.val);
+
+ return tp_track(tp,rr);
+}
+