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Diffstat (limited to 'libguile/strop.c')
-rw-r--r-- | libguile/strop.c | 368 |
1 files changed, 368 insertions, 0 deletions
diff --git a/libguile/strop.c b/libguile/strop.c new file mode 100644 index 000000000..366d249da --- /dev/null +++ b/libguile/strop.c @@ -0,0 +1,368 @@ +/* classes: src_files */ + +/* Copyright (C) 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ + + + +#include <stdio.h> +#include "_scm.h" + + + +#ifdef __STDC__ +int +scm_i_index (SCM * str, SCM chr, SCM sub_start, SCM sub_end, int pos, int pos2, int pos3, int pos4, char * why) +#else +int +scm_i_index (str, chr, sub_start, sub_end, pos, pos2, pos3, pos4, why) + SCM * str; + SCM chr; + SCM sub_start; + SCM sub_end; + int pos; + int pos2; + int pos3; + int pos4; + char * why; +#endif +{ + unsigned char * p; + int x; + int bound; + int ch; + + SCM_ASSERT (SCM_NIMP (*str) && SCM_ROSTRINGP (*str), *str, pos, why); + SCM_ASSERT (SCM_ICHRP (chr), chr, pos2, why); + + if (sub_start == SCM_BOOL_F) + sub_start = SCM_MAKINUM (0); + else + SCM_ASSERT ( SCM_INUMP (sub_start) + && (0 <= SCM_INUM (sub_start)) + && (SCM_INUM (sub_start) <= SCM_ROLENGTH (*str)), + sub_start, pos3, why); + + if (sub_end == SCM_BOOL_F) + sub_end = SCM_MAKINUM (SCM_ROLENGTH (*str)); + else + SCM_ASSERT ( SCM_INUMP (sub_end) + && (SCM_INUM (sub_start) <= SCM_INUM (sub_end)) + && (SCM_INUM (sub_end) <= SCM_ROLENGTH (*str)), + sub_end, pos4, why); + + p = (unsigned char *)SCM_ROCHARS (*str) + SCM_INUM (sub_start); + bound = SCM_INUM (sub_end); + ch = SCM_ICHR (chr); + + for (x = SCM_INUM (sub_start); x < bound; ++x, ++p) + if (*p == ch) + return x; + + return -1; +} + +#ifdef __STDC__ +int +scm_i_rindex (SCM * str, SCM chr, SCM sub_start, SCM sub_end, int pos, int pos2, int pos3, int pos4, char * why) +#else +int +scm_i_rindex (str, chr, sub_start, sub_end, pos, pos2, pos3, pos4, why) + SCM * str; + SCM chr; + SCM sub_start; + SCM sub_end; + int pos; + int pos2; + int pos3; + int pos4; + char * why; +#endif +{ + unsigned char * p; + int x; + int upper_bound; + int lower_bound; + int ch; + + SCM_ASSERT (SCM_NIMP (*str) && SCM_ROSTRINGP (*str), *str, pos, why); + SCM_ASSERT (SCM_ICHRP (chr), chr, pos2, why); + + if (sub_start == SCM_BOOL_F) + sub_start = SCM_MAKINUM (0); + else + SCM_ASSERT ( SCM_INUMP (sub_start) + && (0 <= SCM_INUM (sub_start)) + && (SCM_INUM (sub_start) <= SCM_ROLENGTH (*str)), + sub_start, pos3, why); + + if (sub_end == SCM_BOOL_F) + sub_end = SCM_MAKINUM (SCM_ROLENGTH (*str)); + else + SCM_ASSERT ( SCM_INUMP (sub_end) + && (SCM_INUM (sub_start) <= SCM_INUM (sub_end)) + && (SCM_INUM (sub_end) <= SCM_ROLENGTH (*str)), + sub_end, pos4, why); + + upper_bound = SCM_INUM (sub_end); + lower_bound = SCM_INUM (sub_start); + p = upper_bound - 1 + (unsigned char *)SCM_ROCHARS (*str); + ch = SCM_ICHR (chr); + for (x = upper_bound - 1; x >= lower_bound; --x, --p) + if (*p == ch) + return x; + + return -1; +} + + +SCM_PROC(s_string_index, "string-index", 2, 2, 0, scm_string_index); +#ifdef __STDC__ +SCM +scm_string_index (SCM str, SCM chr, SCM frm, SCM to) +#else +SCM +scm_string_index (str, chr, frm, to) + SCM str; + SCM chr; + SCM frm; + SCM to; +#endif +{ + int pos; + + if (frm == SCM_UNDEFINED) + frm = SCM_BOOL_F; + if (to == SCM_UNDEFINED) + to = SCM_BOOL_F; + pos = scm_i_index (&str, chr, frm, to, SCM_ARG1, SCM_ARG2, SCM_ARG3, SCM_ARG4, s_string_index); + return (pos < 0 + ? SCM_BOOL_F + : SCM_MAKINUM (pos)); +} + +SCM_PROC(s_string_rindex, "string-rindex", 2, 2, 0, scm_string_rindex); +#ifdef __STDC__ +SCM +scm_string_rindex (SCM str, SCM chr, SCM frm, SCM to) +#else +SCM +scm_string_rindex (str, chr, frm, to) + SCM str; + SCM chr; + SCM frm; + SCM to; +#endif +{ + int pos; + + if (frm == SCM_UNDEFINED) + frm = SCM_BOOL_F; + if (to == SCM_UNDEFINED) + to = SCM_BOOL_F; + pos = scm_i_rindex (&str, chr, frm, to, SCM_ARG1, SCM_ARG2, SCM_ARG3, SCM_ARG4, s_string_index); + return (pos < 0 + ? SCM_BOOL_F + : SCM_MAKINUM (pos)); +} + + + + + + +SCM_PROC(s_substring_move_left_x, "substring-move-left!", 2, 0, 1, scm_substring_move_left_x); +#ifdef __STDC__ +SCM +scm_substring_move_left_x (SCM str1, SCM start1, SCM args) +#else +SCM +scm_substring_move_left_x (str1, start1, args) + SCM str1; + SCM start1; + SCM args; +#endif +{ + SCM end1, str2, start2; + long i, j, e; + SCM_ASSERT (3==scm_ilength (args), args, SCM_WNA, s_substring_move_left_x); + end1 = SCM_CAR (args); args = SCM_CDR (args); + str2 = SCM_CAR (args); args = SCM_CDR (args); + start2 = SCM_CAR (args); + SCM_ASSERT (SCM_NIMP (str1) && SCM_STRINGP (str1), str1, SCM_ARG1, s_substring_move_left_x); + SCM_ASSERT (SCM_INUMP (start1), start1, SCM_ARG2, s_substring_move_left_x); + SCM_ASSERT (SCM_INUMP (end1), end1, SCM_ARG3, s_substring_move_left_x); + SCM_ASSERT (SCM_NIMP (str2) && SCM_STRINGP (str2), str2, SCM_ARG4, s_substring_move_left_x); + SCM_ASSERT (SCM_INUMP (start2), start2, SCM_ARG5, s_substring_move_left_x); + i = SCM_INUM (start1), j = SCM_INUM (start2), e = SCM_INUM (end1); + SCM_ASSERT (i <= SCM_LENGTH (str1) && i >= 0, start1, SCM_OUTOFRANGE, s_substring_move_left_x); + SCM_ASSERT (j <= SCM_LENGTH (str2) && j >= 0, start2, SCM_OUTOFRANGE, s_substring_move_left_x); + SCM_ASSERT (e <= SCM_LENGTH (str1) && e >= 0, end1, SCM_OUTOFRANGE, s_substring_move_left_x); + SCM_ASSERT (e-i+j <= SCM_LENGTH (str2), start2, SCM_OUTOFRANGE, s_substring_move_left_x); + while (i<e) SCM_CHARS (str2)[j++] = SCM_CHARS (str1)[i++]; + return SCM_UNSPECIFIED; +} + + +SCM_PROC(s_substring_move_right_x, "substring-move-right!", 2, 0, 1, scm_substring_move_right_x); +#ifdef __STDC__ +SCM +scm_substring_move_right_x (SCM str1, SCM start1, SCM args) +#else +SCM +scm_substring_move_right_x (str1, start1, args) + SCM str1; + SCM start1; + SCM args; +#endif +{ + SCM end1, str2, start2; + long i, j, e; + SCM_ASSERT (3==scm_ilength (args), args, SCM_WNA, s_substring_move_right_x); + end1 = SCM_CAR (args); args = SCM_CDR (args); + str2 = SCM_CAR (args); args = SCM_CDR (args); + start2 = SCM_CAR (args); + SCM_ASSERT (SCM_NIMP (str1) && SCM_STRINGP (str1), str1, SCM_ARG1, s_substring_move_right_x); + SCM_ASSERT (SCM_INUMP (start1), start1, SCM_ARG2, s_substring_move_right_x); + SCM_ASSERT (SCM_INUMP (end1), end1, SCM_ARG3, s_substring_move_right_x); + SCM_ASSERT (SCM_NIMP (str2) && SCM_STRINGP (str2), str2, SCM_ARG4, s_substring_move_right_x); + SCM_ASSERT (SCM_INUMP (start2), start2, SCM_ARG5, s_substring_move_right_x); + i = SCM_INUM (start1), j = SCM_INUM (start2), e = SCM_INUM (end1); + SCM_ASSERT (i <= SCM_LENGTH (str1) && i >= 0, start1, SCM_OUTOFRANGE, s_substring_move_right_x); + SCM_ASSERT (j <= SCM_LENGTH (str2) && j >= 0, start2, SCM_OUTOFRANGE, s_substring_move_right_x); + SCM_ASSERT (e <= SCM_LENGTH (str1) && e >= 0, end1, SCM_OUTOFRANGE, s_substring_move_right_x); + SCM_ASSERT ((j = e-i+j) <= SCM_LENGTH (str2), start2, SCM_OUTOFRANGE, s_substring_move_right_x); + while (i<e) SCM_CHARS (str2)[--j] = SCM_CHARS (str1)[--e]; + return SCM_UNSPECIFIED; +} + + +SCM_PROC(s_substring_fill_x, "substring-fill!", 2, 0, 1, scm_substring_fill_x); +#ifdef __STDC__ +SCM +scm_substring_fill_x (SCM str, SCM start, SCM args) +#else +SCM +scm_substring_fill_x (str, start, args) + SCM str; + SCM start; + SCM args; +#endif +{ + SCM end, fill; + long i, e; + char c; + SCM_ASSERT (2==scm_ilength (args), args, SCM_WNA, s_substring_fill_x); + end = SCM_CAR (args); args = SCM_CDR (args); + fill = SCM_CAR (args); + SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_substring_fill_x); + SCM_ASSERT (SCM_INUMP (start), start, SCM_ARG2, s_substring_fill_x); + SCM_ASSERT (SCM_INUMP (end), end, SCM_ARG3, s_substring_fill_x); + SCM_ASSERT (SCM_ICHRP (fill), fill, SCM_ARG4, s_substring_fill_x); + i = SCM_INUM (start), e = SCM_INUM (end);c = SCM_ICHR (fill); + SCM_ASSERT (i <= SCM_LENGTH (str) && i >= 0, start, SCM_OUTOFRANGE, s_substring_fill_x); + SCM_ASSERT (e <= SCM_LENGTH (str) && e >= 0, end, SCM_OUTOFRANGE, s_substring_fill_x); + while (i<e) SCM_CHARS (str)[i++] = c; + return SCM_UNSPECIFIED; +} + + +SCM_PROC(s_string_null_p, "string-null?", 1, 0, 0, scm_string_null_p); +#ifdef __STDC__ +SCM +scm_string_null_p (SCM str) +#else +SCM +scm_string_null_p (str) + SCM str; +#endif +{ + SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_null_p); + return (SCM_ROLENGTH (str) + ? SCM_BOOL_F + : SCM_BOOL_T); +} + + +SCM_PROC(s_string_to_list, "string->list", 1, 0, 0, scm_string_to_list); +#ifdef __STDC__ +SCM +scm_string_to_list (SCM str) +#else +SCM +scm_string_to_list (str) + SCM str; +#endif +{ + long i; + SCM res = SCM_EOL; + unsigned char *src; + SCM_ASSERT (SCM_NIMP (str) && SCM_ROSTRINGP (str), str, SCM_ARG1, s_string_to_list); + src = SCM_ROUCHARS (str); + for (i = SCM_ROLENGTH (str)-1;i >= 0;i--) res = scm_cons ((SCM)SCM_MAKICHR (src[i]), res); + return res; +} + + + +SCM_PROC(s_string_copy, "string-copy", 1, 0, 0, scm_string_copy); +#ifdef __STDC__ +SCM +scm_string_copy (SCM str) +#else +SCM +scm_string_copy (str) + SCM str; +#endif +{ + SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_string_copy); + return scm_makfromstr (SCM_CHARS (str), (scm_sizet)SCM_LENGTH (str), 0); +} + + +SCM_PROC(s_string_fill_x, "string-fill!", 2, 0, 0, scm_string_fill_x); +#ifdef __STDC__ +SCM +scm_string_fill_x (SCM str, SCM chr) +#else +SCM +scm_string_fill_x (str, chr) + SCM str; + SCM chr; +#endif +{ + register char *dst, c; + register long k; + SCM_ASSERT (SCM_NIMP (str) && SCM_STRINGP (str), str, SCM_ARG1, s_string_fill_x); + SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG2, s_string_fill_x); + c = SCM_ICHR (chr); + dst = SCM_CHARS (str); + for (k = SCM_LENGTH (str)-1;k >= 0;k--) dst[k] = c; + return SCM_UNSPECIFIED; +} + + +#ifdef __STDC__ +void +scm_init_strop (void) +#else +void +scm_init_strop () +#endif +{ +#include "strop.x" +} + |