-/* classes: src_files */
-
-/* Copyright (C) 1994, 1996, 1997, 1999 Free Software Foundation, Inc.
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this software; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA */
-
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
-
-
-\f
-
-#include <stdio.h>
-#include "_scm.h"
-#include "chars.h"
-
-#include "scm_validate.h"
-#include "strop.h"
-#include "read.h" /*For SCM_CASE_INSENSITIVE_P*/
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-\f
-
-/*
-xSCM_DEFINE (scm_i_index, "i-index", 2, 2, 0,
- (SCM str, SCM chr, SCM frm, SCM to),
- "@deftypefn {Internal C Function} {static int} scm_i_index (SCM *@var{str}, \n"
- "SCM @var{chr}, int @var{direction}, SCM @var{sub_start}, SCM @var{sub_end}, char *@var{why})
- "This is a workhorse function that performs either an @code{index} or\n"
- "@code{rindex} function, depending on the value of @var{direction}. I'm\n"
- "not at all clear on the usage of the pos arguments, though the purpose\n"
- "seems to be correct reporting of which argument values are reporting\n"
- "errors. Why you would do that, rather than just use @code{SCM_ARG[1234]}\n"
- "explicitly is beyond me. Anyone holding any enlightenment?"
-*/
-/* implements index if direction > 0 otherwise rindex. */
-static int
-scm_i_index (SCM *str, SCM chr, int direction, SCM sub_start,
- SCM sub_end, const char *why)
-{
- unsigned char * p;
- int x;
- int lower;
- int upper;
- int ch;
-
- SCM_ASSERT (SCM_ROSTRINGP (*str), *str, SCM_ARG1, why);
- SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG2, why);
-
- if (sub_start == SCM_BOOL_F)
- sub_start = SCM_MAKINUM (0);
-
- SCM_ASSERT (SCM_INUMP (sub_start), sub_start, SCM_ARG3, why);
- lower = SCM_INUM (sub_start);
- if (lower < 0
- || lower > SCM_ROLENGTH (*str))
- scm_out_of_range (why, sub_start);
-
- if (sub_end == SCM_BOOL_F)
- sub_end = SCM_MAKINUM (SCM_ROLENGTH (*str));
-
- SCM_ASSERT (SCM_INUMP (sub_end), sub_end, SCM_ARG4, why);
- upper = SCM_INUM (sub_end);
- if (upper < SCM_INUM (sub_start)
- || upper > SCM_ROLENGTH (*str))
- scm_out_of_range (why, sub_end);
-
- if (direction > 0)
- {
- p = (unsigned char *)SCM_ROCHARS (*str) + lower;
- ch = SCM_ICHR (chr);
-
- for (x = SCM_INUM (sub_start); x < upper; ++x, ++p)
- if (*p == ch)
- return x;
- }
- else
- {
- p = upper - 1 + (unsigned char *)SCM_ROCHARS (*str);
- ch = SCM_ICHR (chr);
- for (x = upper - 1; x >= lower; --x, --p)
- if (*p == ch)
- return x;
- }
-
- return -1;
-}
-
-SCM_DEFINE (scm_string_index, "string-index", 2, 2, 0,
- (SCM str, SCM chr, SCM frm, SCM to),
- "Return the index of the first occurrence of @var{chr} in @var{str}. The\n"
- "optional integer arguments @var{frm} and @var{to} limit the search to\n"
- "a portion of the string. This procedure essentially implements the\n"
- "@code{index} or @code{strchr} functions from the C library.\n\n"
- "(qdocs:) Returns the index of @var{char} in @var{str}, or @code{#f} if the\n"
- "@var{char} isn't in @var{str}. If @var{frm} is given and not @code{#f},\n"
- "it is used as the starting index; if @var{to} is given and not @var{#f},\n"
- "it is used as the ending index (exclusive).\n\n"
- "@example\n"
- "(string-index "weiner" #\e)\n"
- "@result{} 1\n\n"
- "(string-index "weiner" #\e 2)\n"
- "@result{} 4\n\n"
- "(string-index "weiner" #\e 2 4)\n"
- "@result{} #f\n"
- "@end example")
-#define FUNC_NAME s_scm_string_index
-{
- int pos;
-
- if (frm == SCM_UNDEFINED)
- frm = SCM_BOOL_F;
- if (to == SCM_UNDEFINED)
- to = SCM_BOOL_F;
- pos = scm_i_index (&str, chr, 1, frm, to, FUNC_NAME);
- return (pos < 0
- ? SCM_BOOL_F
- : SCM_MAKINUM (pos));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_rindex, "string-rindex", 2, 2, 0,
- (SCM str, SCM chr, SCM frm, SCM to),
- "Like @code{string-index}, but search from the right of the string rather\n"
- "than from the left. This procedure essentially implements the\n"
- "@code{rindex} or @code{strrchr} functions from the C library.\n\n"
- "(qdocs:) The same as @code{string-index}, except it gives the rightmost occurance\n"
- "of @var{char} in the range [@var{frm}, @var{to}-1], which defaults to\n"
- "the entire string.\n\n"
- "@example\n"
- "(string-rindex "weiner" #\e)\n"
- "@result{} 4\n\n"
- "(string-rindex "weiner" #\e 2 4)\n"
- "@result{} #f\n\n"
- "(string-rindex "weiner" #\e 2 5)\n"
- "@result{} 4\n"
- "@end example")
-#define FUNC_NAME s_scm_string_rindex
-{
- int pos;
-
- if (frm == SCM_UNDEFINED)
- frm = SCM_BOOL_F;
- if (to == SCM_UNDEFINED)
- to = SCM_BOOL_F;
- pos = scm_i_index (&str, chr, -1, frm, to, FUNC_NAME);
- return (pos < 0
- ? SCM_BOOL_F
- : SCM_MAKINUM (pos));
-}
-#undef FUNC_NAME
-
-
-SCM_REGISTER_PROC(s_substring_move_left_x, "substring-move-left!", 5, 0, 0, scm_substring_move_x);
-SCM_REGISTER_PROC(s_substring_move_right_x, "substring-move-right!", 5, 0, 0, scm_substring_move_x);
-
-/*
-@defun substring-move-left! str1 start1 end1 str2 start2
-@end defun
-@deftypefn {C Function} SCM scm_substring_move_left_x (SCM @var{str1}, SCM @var{start1}, SCM @var{end1}, SCM @var{str2}, SCM @var{start2})
-[@strong{Note:} this is only valid if you've applied the strop patch].
-
-Moves a substring of @var{str1}, from @var{start1} to @var{end1}
-(@var{end1} is exclusive), into @var{str2}, starting at
-@var{start2}. Allows overlapping strings.
-
-@example
-(define x (make-string 10 #\a))
-(define y "bcd")
-(substring-move-left! x 2 5 y 0)
-y
-@result{} "aaa"
-
-x
-@result{} "aaaaaaaaaa"
-
-(define y "bcdefg")
-(substring-move-left! x 2 5 y 0)
-y
-@result{} "aaaefg"
-
-(define y "abcdefg")
-(substring-move-left! y 2 5 y 3)
-y
-@result{} "abccccg"
-@end example
-*/
-
-/*
-@defun substring-move-right! str1 start1 end1 str2 start2
-@end defun
-@deftypefn {C Function} SCM scm_substring_move_right_x (SCM @var{str1}, SCM @var{start1}, SCM @var{end1}, SCM @var{str2}, SCM @var{start2})
-[@strong{Note:} this is only valid if you've applied the strop patch, if
-it hasn't made it into the guile tree].
-
-Does much the same thing as @code{substring-move-left!}, except it
-starts moving at the end of the sequence, rather than the beginning.
-@example
-(define y "abcdefg")
-(substring-move-right! y 2 5 y 0)
-y
-@result{} "ededefg"
-
-(define y "abcdefg")
-(substring-move-right! y 2 5 y 3)
-y
-@result{} "abccdeg"
-@end example
-*/
-
-SCM_DEFINE (scm_substring_move_x, "substring-move!", 5, 0, 0,
- (SCM str1, SCM start1, SCM end1, SCM str2, SCM start2),
- "Copy the substring of @var{str1} bounded by @var{start1} and @var{end1}\n"
- "into @var{str2} beginning at position @var{end2}.\n"
- "@code{substring-move-right!} begins copying from the rightmost character\n"
- "and moves left, and @code{substring-move-left!} copies from the leftmost\n"
- "character moving right.\n\n"
- "It is useful to have two functions that copy in different directions so\n"
- "that substrings can be copied back and forth within a single string. If\n"
- "you wish to copy text from the left-hand side of a string to the\n"
- "right-hand side of the same string, and the source and destination\n"
- "overlap, you must be careful to copy the rightmost characters of the\n"
- "text first, to avoid clobbering your data. Hence, when @var{str1} and\n"
- "@var{str2} are the same string, you should use\n"
- "@code{substring-move-right!} when moving text from left to right, and\n"
- "@code{substring-move-left!} otherwise. If @code{str1} and @samp{str2}\n"
- "are different strings, it does not matter which function you use.")
-#define FUNC_NAME s_scm_substring_move_x
-{
- long s1, s2, e, len;
-
- SCM_VALIDATE_STRING (1,str1);
- SCM_VALIDATE_INUM_COPY (2,start1,s1);
- SCM_VALIDATE_INUM_COPY (3,end1,e);
- SCM_VALIDATE_STRING (4,str2);
- SCM_VALIDATE_INUM_COPY (5,start2,s2);
- len = e - s1;
- SCM_ASSERT_RANGE (3,end1,len >= 0);
- SCM_ASSERT_RANGE (2,start1,s1 <= SCM_LENGTH (str1) && s1 >= 0);
- SCM_ASSERT_RANGE (5,start2,s2 <= SCM_LENGTH (str2) && s2 >= 0);
- SCM_ASSERT_RANGE (3,end1,e <= SCM_LENGTH (str1) && e >= 0);
- SCM_ASSERT_RANGE (5,start2,len+s2 <= SCM_LENGTH (str2));
-
- SCM_SYSCALL(memmove((void *)(&(SCM_CHARS(str2)[s2])),
- (void *)(&(SCM_CHARS(str1)[s1])),
- len));
-
- return scm_return_first(SCM_UNSPECIFIED, str1, str2);
-}
-#undef FUNC_NAME
-
-
-SCM_DEFINE (scm_substring_fill_x, "substring-fill!", 4, 0, 0,
- (SCM str, SCM start, SCM end, SCM fill),
- "Change every character in @var{str} between @var{start} and @var{end} to\n"
- "@var{fill-char}.\n\n"
- "(qdocs:) Destructively fills @var{str}, from @var{start} to @var{end}, with @var{fill}.\n\n"
- "@example\n"
- "(define y \"abcdefg\")\n"
- "(substring-fill! y 1 3 #\r)\n"
- "y\n"
- "@result{} \"arrdefg\"\n"
- "@end example")
-#define FUNC_NAME s_scm_substring_fill_x
-{
- long i, e;
- char c;
- SCM_VALIDATE_STRING (1,str);
- SCM_VALIDATE_INUM_COPY (2,start,i);
- SCM_VALIDATE_INUM_COPY (3,end,e);
- SCM_VALIDATE_ICHR_COPY (4,fill,c);
- SCM_ASSERT_RANGE (2,start,i <= SCM_LENGTH (str) && i >= 0);
- SCM_ASSERT_RANGE (3,end,e <= SCM_LENGTH (str) && e >= 0);
- while (i<e) SCM_CHARS (str)[i++] = c;
- return SCM_UNSPECIFIED;
-}
-#undef FUNC_NAME
-
-
-SCM_DEFINE (scm_string_null_p, "string-null?", 1, 0, 0,
- (SCM str),
- "Return @code{#t} if @var{str}'s length is nonzero, and @code{#f}\n"
- "otherwise.\n\n"
- "(qdocs:) Returns @code{#t} if @var{str} is empty, else returns @code{#f}.\n\n"
- "@example\n"
- "(string-null? \"\")\n"
- "@result{} #t\n\n"
- "(string-null? y)\n"
- "@result{} #f\n"
- "@end example")
-#define FUNC_NAME s_scm_string_null_p
-{
- SCM_VALIDATE_ROSTRING (1,str);
- return SCM_NEGATE_BOOL(SCM_ROLENGTH (str));
-}
-#undef FUNC_NAME
-
-
-SCM_DEFINE (scm_string_to_list, "string->list", 1, 0, 0,
- (SCM str),
- "@samp{String->list} returns a newly allocated list of the\n"
- "characters that make up the given string. @samp{List->string}\n"
- "returns a newly allocated string formed from the characters in the list\n"
- "@var{list}, which must be a list of characters. @samp{String->list}\n"
- "and @samp{list->string} are\n"
- "inverses so far as @samp{equal?} is concerned. (r5rs)")
-#define FUNC_NAME s_scm_string_to_list
-{
- long i;
- SCM res = SCM_EOL;
- unsigned char *src;
- SCM_VALIDATE_ROSTRING (1,str);
- src = SCM_ROUCHARS (str);
- for (i = SCM_ROLENGTH (str)-1;i >= 0;i--) res = scm_cons ((SCM)SCM_MAKICHR (src[i]), res);
- return res;
-}
-#undef FUNC_NAME
-
-
-
-SCM_DEFINE (scm_string_copy, "string-copy", 1, 0, 0,
- (SCM str),
- "Returns a newly allocated copy of the given @var{string}. (r5rs)")
-#define FUNC_NAME s_scm_string_copy
-{
- SCM_VALIDATE_STRINGORSUBSTR (1,str);
- return scm_makfromstr (SCM_ROCHARS (str), (scm_sizet)SCM_ROLENGTH (str), 0);
-}
-#undef FUNC_NAME
-
-
-SCM_DEFINE (scm_string_fill_x, "string-fill!", 2, 0, 0,
- (SCM str, SCM chr),
- "Stores @var{char} in every element of the given @var{string} and returns an\n"
- "unspecified value. (r5rs)")
-#define FUNC_NAME s_scm_string_fill_x
-{
- register char *dst, c;
- register long k;
- SCM_VALIDATE_STRING_COPY (1,str,dst);
- SCM_VALIDATE_ICHR_COPY (2,chr,c);
- for (k = SCM_LENGTH (str)-1;k >= 0;k--) dst[k] = c;
- return SCM_UNSPECIFIED;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_upcase_x, "string-upcase!", 1, 0, 0,
- (SCM v),
- "Destructively upcase every character in @code{str}.\n\n"
- "(qdocs:) Converts each element in @var{str} to upper case.\n\n"
- "@example\n"
- "(string-upcase! y)\n"
- "@result{} \"ARRDEFG\"\n\n"
- "y\n"
- "@result{} \"ARRDEFG\"\n"
- "@end example")
-#define FUNC_NAME s_scm_string_upcase_x
-{
- register long k;
- register unsigned char *cs;
- SCM_ASRTGO (SCM_NIMP (v), badarg1);
- k = SCM_LENGTH (v);
- switch SCM_TYP7
- (v)
- {
- case scm_tc7_string:
- cs = SCM_UCHARS (v);
- while (k--)
- cs[k] = scm_upcase(cs[k]);
- break;
- default:
- badarg1:SCM_WTA (1,v);
- }
- return v;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_upcase, "string-upcase", 1, 0, 0,
- (SCM str),
- "Upcase every character in @code{str}.")
-#define FUNC_NAME s_scm_string_upcase
-{
- return scm_string_upcase_x(scm_string_copy(str));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_downcase_x, "string-downcase!", 1, 0, 0,
- (SCM v),
- "Destructively downcase every character in @code{str}.\n\n"
- "(qdocs:) Converts each element in @var{str} to lower case.\n\n"
- "@example\n"
- "y\n"
- "@result{} \"ARRDEFG\"\n\n"
- "(string-downcase! y)\n"
- "@result{} \"arrdefg\"\n\n"
- "y\n"
- "@result{} \"arrdefg\"\n"
- "@end example")
-#define FUNC_NAME s_scm_string_downcase_x
-{
- register long k;
- register unsigned char *cs;
- SCM_ASRTGO (SCM_NIMP (v), badarg1);
- k = SCM_LENGTH (v);
- switch (SCM_TYP7(v))
- {
- case scm_tc7_string:
- cs = SCM_UCHARS (v);
- while (k--)
- cs[k] = scm_downcase(cs[k]);
- break;
- default:
- badarg1:SCM_WTA (1,v);
- }
- return v;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_downcase, "string-downcase", 1, 0, 0,
- (SCM str),
- "Downcase every character in @code{str}.")
-#define FUNC_NAME s_scm_string_downcase
-{
- SCM_VALIDATE_STRING (1,str);
- return scm_string_downcase_x(scm_string_copy(str));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_capitalize_x, "string-capitalize!", 1, 0, 0,
- (SCM str),
- "Destructively capitalize every character in @code{str}.")
-#define FUNC_NAME s_scm_string_capitalize_x
-{
- char *sz;
- int i, len, in_word=0;
- SCM_VALIDATE_STRING (1,str);
- len = SCM_LENGTH(str);
- sz = SCM_CHARS(str);
- for(i=0; i<len; i++) {
- if(SCM_NFALSEP(scm_char_alphabetic_p(SCM_MAKICHR(sz[i])))) {
- if(!in_word) {
- sz[i] = scm_upcase(sz[i]);
- in_word = 1;
- } else {
- sz[i] = scm_downcase(sz[i]);
- }
- }
- else in_word = 0;
- }
- return str;
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_capitalize, "string-capitalize", 1, 0, 0,
- (SCM str),
- "Capitalize every character in @code{str}.")
-#define FUNC_NAME s_scm_string_capitalize
-{
- SCM_VALIDATE_STRING (1,str);
- return scm_string_capitalize_x(scm_string_copy(str));
-}
-#undef FUNC_NAME
-
-SCM_DEFINE (scm_string_ci_to_symbol, "string-ci->symbol", 1, 0, 0,
- (SCM str),
- "Return the symbol whose name is @var{str}, downcased in necessary(???).")
-#define FUNC_NAME s_scm_string_ci_to_symbol
-{
- return scm_string_to_symbol (SCM_CASE_INSENSITIVE_P
- ? scm_string_downcase(str)
- : str);
-}
-#undef FUNC_NAME
-
-void
-scm_init_strop ()
-{
-#include "strop.x"
-}
+/* classes: src_files */
+
+/* Copyright (C) 1994,1996,1997,1999,2000,2001 Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this software; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA
+
+As a special exception, the Free Software Foundation gives permission
+for additional uses of the text contained in its release of GUILE.
+
+The exception is that, if you link the GUILE library with other files
+to produce an executable, this does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+Your use of that executable is in no way restricted on account of
+linking the GUILE library code into it.
+
+This exception does not however invalidate any other reasons why
+the executable file might be covered by the GNU General Public License.
+
+This exception applies only to the code released by the
+Free Software Foundation under the name GUILE. If you copy
+code from other Free Software Foundation releases into a copy of
+GUILE, as the General Public License permits, the exception does
+not apply to the code that you add in this way. To avoid misleading
+anyone as to the status of such modified files, you must delete
+this exception notice from them.
+
+If you write modifications of your own for GUILE, it is your choice
+whether to permit this exception to apply to your modifications.
+If you do not wish that, delete this exception notice. */
+
+
+
+\f
+
+#include <errno.h>
+
+#include "libguile/_scm.h"
+#include "libguile/chars.h"
+#include "libguile/strings.h"
+
+#include "libguile/validate.h"
+#include "libguile/strop.h"
+#include "libguile/read.h" /*For SCM_CASE_INSENSITIVE_P*/
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+\f
+
+/*
+xSCM_DEFINE (scm_i_index, "i-index", 2, 2, 0,
+ (SCM str, SCM chr, SCM frm, SCM to),
+ "@deftypefn {Internal C Function} {static int} scm_i_index (SCM *@var{str},\n"
+ "SCM @var{chr}, int @var{direction}, SCM @var{sub_start}, SCM @var{sub_end}, char *@var{why})
+ "This is a workhorse function that performs either an @code{index} or\n"
+ "@code{rindex} function, depending on the value of @var{direction}."
+*/
+/* implements index if direction > 0 otherwise rindex. */
+static long
+scm_i_index (SCM *str, SCM chr, int direction, SCM sub_start,
+ SCM sub_end, const char *why)
+{
+ unsigned char * p;
+ long x;
+ long lower;
+ long upper;
+ int ch;
+
+ SCM_ASSERT (SCM_STRINGP (*str), *str, SCM_ARG1, why);
+ SCM_ASSERT (SCM_CHARP (chr), chr, SCM_ARG2, why);
+
+ if (SCM_FALSEP (sub_start))
+ sub_start = SCM_MAKINUM (0);
+
+ SCM_ASSERT (SCM_INUMP (sub_start), sub_start, SCM_ARG3, why);
+ lower = SCM_INUM (sub_start);
+ if (lower < 0 || lower > SCM_STRING_LENGTH (*str))
+ scm_out_of_range (why, sub_start);
+
+ if (SCM_FALSEP (sub_end))
+ sub_end = SCM_MAKINUM (SCM_STRING_LENGTH (*str));
+
+ SCM_ASSERT (SCM_INUMP (sub_end), sub_end, SCM_ARG4, why);
+ upper = SCM_INUM (sub_end);
+ if (upper < SCM_INUM (sub_start) || upper > SCM_STRING_LENGTH (*str))
+ scm_out_of_range (why, sub_end);
+
+ if (direction > 0)
+ {
+ p = SCM_STRING_UCHARS (*str) + lower;
+ ch = SCM_CHAR (chr);
+
+ for (x = SCM_INUM (sub_start); x < upper; ++x, ++p)
+ if (*p == ch)
+ return x;
+ }
+ else
+ {
+ p = upper - 1 + SCM_STRING_UCHARS (*str);
+ ch = SCM_CHAR (chr);
+ for (x = upper - 1; x >= lower; --x, --p)
+ if (*p == ch)
+ return x;
+ }
+
+ return -1;
+}
+
+SCM_DEFINE (scm_string_index, "string-index", 2, 2, 0,
+ (SCM str, SCM chr, SCM frm, SCM to),
+ "Return the index of the first occurrence of @var{chr} in\n"
+ "@var{str}. The optional integer arguments @var{frm} and\n"
+ "@var{to} limit the search to a portion of the string. This\n"
+ "procedure essentially implements the @code{index} or\n"
+ "@code{strchr} functions from the C library.\n"
+ "\n"
+ "@lisp\n"
+ "(string-index \"weiner\" #\\e)\n"
+ "@result{} 1\n\n"
+ "(string-index \"weiner\" #\\e 2)\n"
+ "@result{} 4\n\n"
+ "(string-index \"weiner\" #\\e 2 4)\n"
+ "@result{} #f\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_index
+{
+ long pos;
+
+ if (SCM_UNBNDP (frm))
+ frm = SCM_BOOL_F;
+ if (SCM_UNBNDP (to))
+ to = SCM_BOOL_F;
+ pos = scm_i_index (&str, chr, 1, frm, to, FUNC_NAME);
+ return (pos < 0
+ ? SCM_BOOL_F
+ : SCM_MAKINUM (pos));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_string_rindex, "string-rindex", 2, 2, 0,
+ (SCM str, SCM chr, SCM frm, SCM to),
+ "Like @code{string-index}, but search from the right of the\n"
+ "string rather than from the left. This procedure essentially\n"
+ "implements the @code{rindex} or @code{strrchr} functions from\n"
+ "the C library.\n"
+ "\n"
+ "@lisp\n"
+ "(string-rindex \"weiner\" #\\e)\n"
+ "@result{} 4\n\n"
+ "(string-rindex \"weiner\" #\\e 2 4)\n"
+ "@result{} #f\n\n"
+ "(string-rindex \"weiner\" #\\e 2 5)\n"
+ "@result{} 4\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_rindex
+{
+ long pos;
+
+ if (SCM_UNBNDP (frm))
+ frm = SCM_BOOL_F;
+ if (SCM_UNBNDP (to))
+ to = SCM_BOOL_F;
+ pos = scm_i_index (&str, chr, -1, frm, to, FUNC_NAME);
+ return (pos < 0
+ ? SCM_BOOL_F
+ : SCM_MAKINUM (pos));
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_substring_move_x, "substring-move!", 5, 0, 0,
+ (SCM str1, SCM start1, SCM end1, SCM str2, SCM start2),
+ "Copy the substring of @var{str1} bounded by @var{start1} and @var{end1}\n"
+ "into @var{str2} beginning at position @var{start2}.\n"
+ "@var{str1} and @var{str2} can be the same string.")
+#define FUNC_NAME s_scm_substring_move_x
+{
+ long s1, s2, e, len;
+
+ SCM_VALIDATE_STRING (1, str1);
+ SCM_VALIDATE_INUM_COPY (2, start1, s1);
+ SCM_VALIDATE_INUM_COPY (3, end1, e);
+ SCM_VALIDATE_STRING (4, str2);
+ SCM_VALIDATE_INUM_COPY (5, start2, s2);
+ len = e - s1;
+ SCM_ASSERT_RANGE (3, end1, len >= 0);
+ SCM_ASSERT_RANGE (2, start1, s1 <= SCM_STRING_LENGTH (str1) && s1 >= 0);
+ SCM_ASSERT_RANGE (5, start2, s2 <= SCM_STRING_LENGTH (str2) && s2 >= 0);
+ SCM_ASSERT_RANGE (3, end1, e <= SCM_STRING_LENGTH (str1) && e >= 0);
+ SCM_ASSERT_RANGE (5, start2, len+s2 <= SCM_STRING_LENGTH (str2));
+
+ SCM_SYSCALL(memmove((void *)(&(SCM_STRING_CHARS(str2)[s2])),
+ (void *)(&(SCM_STRING_CHARS(str1)[s1])),
+ len));
+
+ return scm_return_first(SCM_UNSPECIFIED, str1, str2);
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_substring_fill_x, "substring-fill!", 4, 0, 0,
+ (SCM str, SCM start, SCM end, SCM fill),
+ "Change every character in @var{str} between @var{start} and\n"
+ "@var{end} to @var{fill}.\n"
+ "\n"
+ "@lisp\n"
+ "(define y \"abcdefg\")\n"
+ "(substring-fill! y 1 3 #\\r)\n"
+ "y\n"
+ "@result{} \"arrdefg\"\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_substring_fill_x
+{
+ long i, e;
+ char c;
+ SCM_VALIDATE_STRING (1, str);
+ SCM_VALIDATE_INUM_COPY (2, start, i);
+ SCM_VALIDATE_INUM_COPY (3, end, e);
+ SCM_VALIDATE_CHAR_COPY (4, fill, c);
+ SCM_ASSERT_RANGE (2, start, i <= SCM_STRING_LENGTH (str) && i >= 0);
+ SCM_ASSERT_RANGE (3, end, e <= SCM_STRING_LENGTH (str) && e >= 0);
+ while (i<e) SCM_STRING_CHARS (str)[i++] = c;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_null_p, "string-null?", 1, 0, 0,
+ (SCM str),
+ "Return @code{#t} if @var{str}'s length is zero, and\n"
+ "@code{#f} otherwise.\n"
+ "@lisp\n"
+ "(string-null? \"\") @result{} #t\n"
+ "y @result{} \"foo\"\n"
+ "(string-null? y) @result{} #f\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_null_p
+{
+ SCM_VALIDATE_STRING (1, str);
+ return SCM_BOOL (SCM_STRING_LENGTH (str) == 0);
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_to_list, "string->list", 1, 0, 0,
+ (SCM str),
+ "Return a newly allocated list of the characters that make up\n"
+ "the given string @var{str}. @code{string->list} and\n"
+ "@code{list->string} are inverses as far as @samp{equal?} is\n"
+ "concerned.")
+#define FUNC_NAME s_scm_string_to_list
+{
+ long i;
+ SCM res = SCM_EOL;
+ unsigned char *src;
+ SCM_VALIDATE_STRING (1, str);
+ src = SCM_STRING_UCHARS (str);
+ for (i = SCM_STRING_LENGTH (str)-1;i >= 0;i--) res = scm_cons (SCM_MAKE_CHAR (src[i]), res);
+ return res;
+}
+#undef FUNC_NAME
+
+
+/* Helper function for the string copy and string conversion functions.
+ * No argument checking is performed. */
+static SCM
+string_copy (SCM str)
+{
+ const char* chars = SCM_STRING_CHARS (str);
+ size_t length = SCM_STRING_LENGTH (str);
+ SCM new_string = scm_mem2string (chars, length);
+ scm_remember_upto_here_1 (str);
+ return new_string;
+}
+
+
+SCM_DEFINE (scm_string_copy, "string-copy", 1, 0, 0,
+ (SCM str),
+ "Return a newly allocated copy of the given @var{string}.")
+#define FUNC_NAME s_scm_string_copy
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_copy (str);
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_fill_x, "string-fill!", 2, 0, 0,
+ (SCM str, SCM chr),
+ "Store @var{char} in every element of the given @var{string} and\n"
+ "return an unspecified value.")
+#define FUNC_NAME s_scm_string_fill_x
+{
+ register char *dst, c;
+ register long k;
+ SCM_VALIDATE_STRING_COPY (1, str, dst);
+ SCM_VALIDATE_CHAR_COPY (2, chr, c);
+ for (k = SCM_STRING_LENGTH (str)-1;k >= 0;k--) dst[k] = c;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+
+
+/* Helper function for the string uppercase conversion functions.
+ * No argument checking is performed. */
+static SCM
+string_upcase_x (SCM v)
+{
+ unsigned long k;
+
+ for (k = 0; k < SCM_STRING_LENGTH (v); ++k)
+ SCM_STRING_UCHARS (v) [k] = scm_upcase (SCM_STRING_UCHARS (v) [k]);
+
+ return v;
+}
+
+
+SCM_DEFINE (scm_string_upcase_x, "string-upcase!", 1, 0, 0,
+ (SCM str),
+ "Destructively upcase every character in @var{str} and return\n"
+ "@var{str}.\n"
+ "@lisp\n"
+ "y @result{} \"arrdefg\"\n"
+ "(string-upcase! y) @result{} \"ARRDEFG\"\n"
+ "y @result{} \"ARRDEFG\"\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_upcase_x
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_upcase_x (str);
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_upcase, "string-upcase", 1, 0, 0,
+ (SCM str),
+ "Return a freshly allocated string containing the characters of\n"
+ "@var{str} in upper case.")
+#define FUNC_NAME s_scm_string_upcase
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_upcase_x (string_copy (str));
+}
+#undef FUNC_NAME
+
+
+/* Helper function for the string lowercase conversion functions.
+ * No argument checking is performed. */
+static SCM
+string_downcase_x (SCM v)
+{
+ unsigned long k;
+
+ for (k = 0; k < SCM_STRING_LENGTH (v); ++k)
+ SCM_STRING_UCHARS (v) [k] = scm_downcase (SCM_STRING_UCHARS (v) [k]);
+
+ return v;
+}
+
+
+SCM_DEFINE (scm_string_downcase_x, "string-downcase!", 1, 0, 0,
+ (SCM str),
+ "Destructively downcase every character in @var{str} and return\n"
+ "@var{str}.\n"
+ "@lisp\n"
+ "y @result{} \"ARRDEFG\"\n"
+ "(string-downcase! y) @result{} \"arrdefg\"\n"
+ "y @result{} \"arrdefg\"\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_downcase_x
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_downcase_x (str);
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_downcase, "string-downcase", 1, 0, 0,
+ (SCM str),
+ "Return a freshly allocation string containing the characters in\n"
+ "@var{str} in lower case.")
+#define FUNC_NAME s_scm_string_downcase
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_downcase_x (string_copy (str));
+}
+#undef FUNC_NAME
+
+
+/* Helper function for the string capitalization functions.
+ * No argument checking is performed. */
+static SCM
+string_capitalize_x (SCM str)
+{
+ unsigned char *sz;
+ long i, len;
+ int in_word=0;
+
+ len = SCM_STRING_LENGTH(str);
+ sz = SCM_STRING_UCHARS (str);
+ for(i=0; i<len; i++) {
+ if (!SCM_FALSEP (scm_char_alphabetic_p (SCM_MAKE_CHAR (sz[i])))) {
+ if(!in_word) {
+ sz[i] = scm_upcase(sz[i]);
+ in_word = 1;
+ } else {
+ sz[i] = scm_downcase(sz[i]);
+ }
+ }
+ else in_word = 0;
+ }
+ return str;
+}
+
+
+SCM_DEFINE (scm_string_capitalize_x, "string-capitalize!", 1, 0, 0,
+ (SCM str),
+ "Upcase the first character of every word in @var{str}\n"
+ "destructively and return @var{str}.\n"
+ "\n"
+ "@lisp\n"
+ "y @result{} \"hello world\"\n"
+ "(string-capitalize! y) @result{} \"Hello World\"\n"
+ "y @result{} \"Hello World\"\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_capitalize_x
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_capitalize_x (str);
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_capitalize, "string-capitalize", 1, 0, 0,
+ (SCM str),
+ "Return a freshly allocated string with the characters in\n"
+ "@var{str}, where the first character of every word is\n"
+ "capitalized.")
+#define FUNC_NAME s_scm_string_capitalize
+{
+ SCM_VALIDATE_STRING (1, str);
+
+ return string_capitalize_x (string_copy (str));
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_split, "string-split", 2, 0, 0,
+ (SCM str, SCM chr),
+ "Split the string @var{str} into the a list of the substrings delimited\n"
+ "by appearances of the character @var{chr}. Note that an empty substring\n"
+ "between separator characters will result in an empty string in the\n"
+ "result list.\n"
+ "\n"
+ "@lisp\n"
+ "(string-split \"root:x:0:0:root:/root:/bin/bash\" #\\:)\n"
+ "@result{}\n"
+ "(\"root\" \"x\" \"0\" \"0\" \"root\" \"/root\" \"/bin/bash\")\n"
+ "\n"
+ "(string-split \"::\" #\\:)\n"
+ "@result{}\n"
+ "(\"\" \"\" \"\")\n"
+ "\n"
+ "(string-split \"\" #\\:)\n"
+ "@result{}\n"
+ "(\"\")\n"
+ "@end lisp")
+#define FUNC_NAME s_scm_string_split
+{
+ long idx, last_idx;
+ char * p;
+ int ch;
+ SCM res = SCM_EOL;
+
+ SCM_VALIDATE_STRING (1, str);
+ SCM_VALIDATE_CHAR (2, chr);
+
+ idx = SCM_STRING_LENGTH (str);
+ p = SCM_STRING_CHARS (str);
+ ch = SCM_CHAR (chr);
+ while (idx >= 0)
+ {
+ last_idx = idx;
+ while (idx > 0 && p[idx - 1] != ch)
+ idx--;
+ if (idx >= 0)
+ {
+ res = scm_cons (scm_mem2string (p + idx, last_idx - idx), res);
+ idx--;
+ }
+ }
+ scm_remember_upto_here_1 (str);
+ return res;
+}
+#undef FUNC_NAME
+
+
+SCM_DEFINE (scm_string_ci_to_symbol, "string-ci->symbol", 1, 0, 0,
+ (SCM str),
+ "Return the symbol whose name is @var{str}. @var{str} is\n"
+ "converted to lowercase before the conversion is done, if Guile\n"
+ "is currently reading symbols case-insensitively.")
+#define FUNC_NAME s_scm_string_ci_to_symbol
+{
+ return scm_string_to_symbol (SCM_CASE_INSENSITIVE_P
+ ? scm_string_downcase(str)
+ : str);
+}
+#undef FUNC_NAME
+
+void
+scm_init_strop ()
+{
+#include "libguile/strop.x"
+}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff