ali@0: #include <stdlib.h>
ali@0: #include <string.h>
ali@5: #include <bl/blstring.h>
ali@5: #include <bl/types.h>
ali@5: #include <bl/mem.h>
ali@5: #include <bl/strfuncs.h>
ali@0: 
ali@0: /*
ali@0:  * Strings which manage their own memory
ali@0:  */
ali@0: 
ali@0: String *string_new(const char *init)
ali@0: {
ali@0:     String *string=mem_new(String,1);
ali@0:     if (!init)
ali@0: 	init="";
ali@0:     string->len=strlen(init);
ali@0:     string->alloc=string->len+1;
ali@0:     string->str=str_dup(init);
ali@0:     return string;
ali@0: }
ali@0: 
ali@0: /*
ali@0:  * Free a string and either return the contents (if free_segment is FALSE)
ali@0:  * or free the contents as well and return NULL (if free_segment is TRUE).
ali@0:  */
ali@0: char *string_free(String *string,boolean free_segment)
ali@0: {
ali@0:     char *retval;
ali@0:     if (free_segment)
ali@0:     {
ali@0: 	mem_free(string->str);
ali@0: 	retval=NULL;
ali@0:     }
ali@0:     else
ali@0: 	retval=string->str;
ali@0:     mem_free(string);
ali@0:     return retval;
ali@0: }
ali@0: 
ali@0: /*
ali@0:  * Append a byte to string.
ali@0:  */
ali@0: void string_append_c(String *string,char c)
ali@0: {
ali@0:     if (string->len+1==string->alloc)
ali@0:     {
ali@0: 	string->alloc*=2;
ali@0: 	string->str=mem_renew(char,string->str,string->alloc);
ali@0:     }
ali@0:     string->str[string->len++]=c;
ali@0:     string->str[string->len]='\0';
ali@0: }
ali@0: 
ali@0: /*
ali@0:  * Append len bytes from s to string. len may be passed as <0 if s is
ali@0:  * a nul-terminated string of unknown length.
ali@0:  */
ali@0: void string_append_len(String *string,const char *s,ssize_t len)
ali@0: {
ali@0:     if (len<0)
ali@0: 	len=strlen(s);
ali@0:     if (string->len+len>=string->alloc)
ali@0:     {
ali@0: 	while (string->len+len>=string->alloc)
ali@0: 	    string->alloc*=2;
ali@0: 	string->str=mem_renew(char,string->str,string->alloc);
ali@0:     }
ali@0:     memcpy(string->str+string->len,s,len);
ali@0:     string->len+=len;
ali@0:     string->str[string->len]='\0';
ali@0: }
ali@0: 
ali@0: /*
ali@0:  * Sets the length of a String. If the length is less than the current length,
ali@0:  * the string will be truncated. If the length is greater than the current
ali@0:  * length, the contents of the newly added area are undefined. (However, as
ali@0:  * always, string->str[string->len] will be a nul byte.)
ali@0:  */
ali@0: void string_set_size(String *string,size_t len)
ali@0: {
ali@0:     if (len>=string->alloc)
ali@0:     {
ali@0: 	while (len>=string->alloc)
ali@0: 	    string->alloc*=2;
ali@0: 	string->str=mem_renew(char,string->str,string->alloc);
ali@0:     }
ali@0:     string->len=len;
ali@0:     string->str[string->len]='\0';
ali@0: }