PFE 0.33.70

generated
(C) Guido U. Draheim
guidod@gmx.de

String

+ extensions

---

-TRAILING( str-ptr str-len -- str-ptr str-len' )  => "[ANS] FORTH"

check the given buffer if it contains whitespace at its end. If so, shorten str-len to meet the last non-whitespace character in the buffer.

primitive code = [p4_dash_trailing]

---

/STRING( str-ptr str-len n -- str-ptr' str-len' )  => "[ANS] FORTH"

shorten the buffer from the beginning by n characters, i.e.

   str-ptr += n ;
   str-len -= n; 
  

primitive code = [p4_slash_string]

---

BLANK( str-ptr str-len -- )  => "[ANS] FORTH"

FILL a given buffer with BL blanks

primitive code = [p4_blank]

---

CMOVE( from-ptr to-ptr len# -- )  => "[ANS] FORTH"

memcpy an area from->to for len bytes, starting at the lower addresses, see CMOVE>

primitive code = [p4_cmove]

---

CMOVE>( from-ptr to-ptr len# -- )  => "[ANS] FORTH"

memcpy an area from->to for len bytes, starting with the higher addresses, see CMOVE

primitive code = [p4_cmove_up]

---

COMPARE( str1-ptr str1-len str2-ptr str2-len -- diff# )  => "[ANS] FORTH"

compare both str-buffers, return 0 if they are equal, -1 if lower or shorter, and 1 if greater or longer

primitive code = [p4_compare]

---

SEARCH( str1-ptr str1-len str2-ptr str2-len -- str1-ptr' str1-len' flag )  => "[ANS] FORTH"

search the str-buffer1 for the text of str-buffer2, if it is contained return TRUE and return buffer-values that point to the contained string, otherwise return FALSE and leave the original str-buffer1.

primitive code = [p4_search]

---

SLITERAL( C: str-ptr str-len -- S: str-ptr str-len )  => "[ANS] FORTH"

this word does almost the same as LITERAL - it takes an S" string as specified in the CS-STACK at compile time and compiles into the current definition where it is returned as if there were a direct string-literal. This can be used to compute a string-literal at compile-time and hardwire it.

  example:
    : ORIGINAL-HOME  [ $HOME COUNT ] SLITERAL ; ( -- str-ptr str-len )
  

compiling word = [p4_sliteral]