diff --git a/lib/strutil.h b/lib/strutil.h index 264d30fcb..2c5252d48 100644 --- a/lib/strutil.h +++ b/lib/strutil.h @@ -508,4 +508,5 @@ int str_isutf8 (const char *codeset_name); const char *str_detect_termencoding (void); +int str_verscmp(const char *s1, const char *s2); #endif /* MC_STRUTIL_H*/ diff --git a/lib/strutil/Makefile.am b/lib/strutil/Makefile.am index 488833feb..e7aceaf59 100644 --- a/lib/strutil/Makefile.am +++ b/lib/strutil/Makefile.am @@ -5,7 +5,8 @@ libmcstrutil_la_SOURCES = \ strutil8bit.c \ strutilascii.c \ strutil.c \ - strutilutf8.c + strutilutf8.c \ + strverscmp.c diff --git a/lib/strutil/strverscmp.c b/lib/strutil/strverscmp.c new file mode 100644 index 000000000..59eac76c9 --- /dev/null +++ b/lib/strutil/strverscmp.c @@ -0,0 +1,108 @@ +/* Compare strings while treating digits characters numerically. + Copyright (C) 1997, 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jean-Fran�ois Bignolles , 1997. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include "lib/strutil.h" + +/* states: S_N: normal, S_I: comparing integral part, S_F: comparing + fractionnal parts, S_Z: idem but with leading Zeroes only */ +#define S_N 0x0 +#define S_I 0x4 +#define S_F 0x8 +#define S_Z 0xC + +/* result_type: CMP: return diff; LEN: compare using len_diff/diff */ +#define CMP 2 +#define LEN 3 + + +/* Compare S1 and S2 as strings holding indices/version numbers, + returning less than, equal to or greater than zero if S1 is less than, + equal to or greater than S2 (for more info, see the texinfo doc). +*/ + +int str_verscmp (const char *s1, const char *s2) +{ + unsigned char *p1 = (unsigned char *) s1; + unsigned char *p2 = (unsigned char *) s2; + unsigned char c1, c2; + int state; + int diff; + + /* Symbol(s) 0 [1-9] others (padding) + Transition (10) 0 (01) d (00) x (11) - */ + static const unsigned int next_state[] = + { + /* state x d 0 - */ + /* S_N */ S_N, S_I, S_Z, S_N, + /* S_I */ S_N, S_I, S_I, S_I, + /* S_F */ S_N, S_F, S_F, S_F, + /* S_Z */ S_N, S_F, S_Z, S_Z + }; + + static const int result_type[] = + { + /* state x/x x/d x/0 x/- d/x d/d d/0 d/- + 0/x 0/d 0/0 0/- -/x -/d -/0 -/- */ + + /* S_N */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP, + CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP, + /* S_I */ CMP, -1, -1, CMP, +1, LEN, LEN, CMP, + +1, LEN, LEN, CMP, CMP, CMP, CMP, CMP, + /* S_F */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP, + CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP, + /* S_Z */ CMP, +1, +1, CMP, -1, CMP, CMP, CMP, + -1, CMP, CMP, CMP + }; + + if (p1 == p2) + return 0; + + c1 = *p1++; + c2 = *p2++; + /* Hint: '0' is a digit too. */ + state = S_N | ((c1 == '0') + (isdigit (c1) != 0)); + + while ((diff = c1 - c2) == 0 && c1 != '\0') + { + state = next_state[state]; + c1 = *p1++; + c2 = *p2++; + state |= (c1 == '0') + (isdigit (c1) != 0); + } + + state = result_type[state << 2 | (((c2 == '0') + (isdigit (c2) != 0)))]; + + switch (state) + { + case CMP: + return diff; + + case LEN: + while (isdigit (*p1++)) + if (!isdigit (*p2++)) + return 1; + + return isdigit (*p2) ? -1 : diff; + + default: + return state; + } +} diff --git a/src/dir.c b/src/dir.c index 034467b88..1ace0b738 100644 --- a/src/dir.c +++ b/src/dir.c @@ -97,6 +97,19 @@ sort_name (file_entry *a, file_entry *b) return bd - ad; } +int +sort_vers (file_entry *a, file_entry *b) +{ + int ad = MY_ISDIR (a); + int bd = MY_ISDIR (b); + + if (ad == bd || mix_all_files) { + return str_verscmp(a->fname, b->fname) * reverse; + } else { + return bd - ad; + } +} + int sort_ext (file_entry *a, file_entry *b) { diff --git a/src/dir.h b/src/dir.h index 30431aaf2..c7f5c6606 100644 --- a/src/dir.h +++ b/src/dir.h @@ -54,6 +54,7 @@ int handle_path (dir_list *list, const char *path, struct stat *buf1, /* Sorting functions */ int unsorted (file_entry *a, file_entry *b); int sort_name (file_entry *a, file_entry *b); +int sort_vers (file_entry *a, file_entry *b); int sort_ext (file_entry *a, file_entry *b); int sort_time (file_entry *a, file_entry *b); int sort_atime (file_entry *a, file_entry *b); diff --git a/src/screen.c b/src/screen.c index 26cde6a4d..fb8703274 100644 --- a/src/screen.c +++ b/src/screen.c @@ -448,6 +448,15 @@ panel_field_t panel_fields [] = { string_file_name, (sortfn *) sort_name }, + { + "version", 12, 1, J_LEFT_FIT, + /* TRANSLATORS: one single character to represent 'version' sort mode */ + /* TRANSLATORS: no need to translate 'sort', it's just a context prefix */ + N_("sort|v"), + N_("&Version"), TRUE, FALSE, + string_file_name, + (sortfn *) sort_vers + }, { "extension", 12, 1, J_LEFT_FIT, /* TRANSLATORS: one single character to represent 'extension' sort mode */