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#include "str.h"
__attribute__ ((optimize(3))) bool charisalpha(char c){
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}
__attribute__ ((optimize(3))) bool charisnum(char c){
return c >= '0' && c <= '9';
}
__attribute__ ((optimize(3))) bool charisblank(char c){
return c == ' ' || c == '\t';
}
__attribute__ ((optimize(3))) bool charislinebreak(char c){
return c == '\n' || c == '\f' || c == '\v';
}
__attribute__ ((optimize(3))) bool charisspace(char c){
switch(c){
case ' ': case '\t': case '\n': case '\r': case '\f': case '\v':
return true;
default:
return false;
}
}
char lowerchar(char c){
if(c >= 'A' && c <= 'Z') c += 32;
return c;
}
u32 lowers(char *s){
u32 l = -1;
while(s[++l]) s[l] = lowerchar(s[l]);
return l;
}
__attribute__ ((optimize(1))) u32 len(const char *s){
if(s == NULL) return 0;
u32 l = -1;
while(s[++l]);
return l;
}
str dstr(char *s){
str r = {
.cap = len(s),
.len = r.cap,
.ptr = calloc(r.len+1, sizeof(char))
};
if(r.ptr == NULL) r = (str){0};
else memcpy(r.ptr, s, r.len);
return r;
}
str dnstr(u32 cap){
str s = {
.cap = cap,
.len = 0,
.ptr = calloc(cap+1, sizeof(char))
};
return s;
}
int resize_str(str *s, u32 nsize){
if(nsize == 0) return 1;
char *nptr = realloc(s->ptr, nsize);
if(nptr == NULL) return 1;
s->ptr = nptr;
s->cap = nsize;
return 0;
}
str dup_str(str s){
// we use len here to account for static strings that have no cap
str r = {.cap = s.len, .len = s.len, .ptr = calloc(s.len+1, sizeof(char))};
if(r.ptr == NULL) return (str){0};
memcpy(r.ptr, s.ptr, s.len);
return r;
}
u32 lowerstr(str s){
return lowers(s.ptr);
}
str utostr(u64 n, int b){
str s = {
.ptr = calloc(sizeof(n)*8 + 2, sizeof(char))
};
if(s.ptr == NULL) return (str){0};
u64 dn = n, p = 1;
while(dn /= b) p *= b;
while(p){
dn = n/p;
s.ptr[s.len++] = dn > 9 ? 'A'-10+dn : '0'+dn;
n %= p, p /= b;
}
char *nptr = realloc(s.ptr, s.len+1);
if(nptr == NULL){
free(s.ptr);
return (str){0};
}
s.ptr = nptr;
s.cap = s.len;
return s;
}
// TODO add support for different bases
u64 strtou(str s){
u64 i = 0, r = 0;
while(charisnum(s.ptr[i])){
r *= 10;
r += s.ptr[i++] - '0';
}
return r;
}
u64 len_nstrs(u64 n, ...){
u64 s = 0;
va_list vl;
va_start(vl, n);
for(u64 i = 0; i < n; i++) {
str t = va_arg(vl, str);
s += t.len;
}
va_end(vl);
return s;
}
void copy_nstrs(str dst, u64 n, ...){
va_list vl;
va_start(vl, n);
for(u64 i = 0; i < n; i++) {
str t = va_arg(vl, str);
copy_str(dst, t);
}
va_end(vl);
}
void move_nstrs(str dst, u64 n, ...){
va_list vl;
va_start(vl, n);
for(u64 i = 0; i < n; i++) {
str t = va_arg(vl, str);
move_str(dst, t);
}
va_end(vl);
}
str read_delim(char *buf, char d){
u32 i = 0;
while(buf[i] && buf[i] != d) i++;
str s = {.cap = i, .len = i, .ptr = calloc(s.cap+1, sizeof(char))};
if(s.ptr == NULL) return (str){0};
memcpy(s.ptr, buf, i);
return s;
}
str sread_delim(char *buf, char d){
u32 i = 0;
while(buf[i] && buf[i] != d) i++;
str s = {.cap = 0, .len = i, .ptr = buf};
return s;
}
str read_delim_f(char *buf, bool (*func)(char), bool func_cond){
u32 i = 0;
while(buf[i] && (func(buf[i]) != func_cond)) i++;
str s = {.cap = i, .len = i, .ptr = calloc(s.cap+1, sizeof(char))};
if(s.ptr == NULL) return (str){0};
memcpy(s.ptr, buf, i);
return s;
}
str sread_delim_f(char *buf, bool (*func)(char), bool func_cond){
u32 i = 0;
while(buf[i] && (func(buf[i]) != func_cond)) i++;
str s = {.cap = 0, .len = i, .ptr = buf};
return s;
}
u32 get_line_len(char *buf){
u32 l = 0;
while(buf[l] != '\0' && buf[l] != '\n') l++;
return l;
}
void fd_to_str(str *s, int fd, u32 len){
s->ptr = calloc(len+1, sizeof(char));
if(s->ptr == NULL) return;
for(u32 l = len; l != 0; l -= read(fd, s->ptr+(len-l), l));
s->cap = len;
s->len = len;
}
void file_to_str(str *s, FILE *fp, u32 len){
s->ptr = calloc(len+1, sizeof(char));
if(s->ptr == NULL) return;
for(u32 l = len; l != 0; l -= fread(s->ptr, sizeof(char), len, fp));
s->cap = len;
s->len = len;
}
void print_str(str s){
for(u32 i = 0; i < s.len; i++){
putchar(s.ptr[i]);
}
}
void free_str(str *s){
if(s->ptr != NULL && s->cap > 0) free(s->ptr);
s->ptr = NULL;
s->cap = 0;
s->len = 0;
}
char *charinstr(char c, str s){
for(u32 i = 0; i < s.len; i++){
if(s.ptr[i] == c){
return s.ptr + i;
}
}
return NULL;
}
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