/* str-list.c: define routines for string lists. Copyright 2001, 2005 Olaf Weber Copyright 1993 Karl Berry. This 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. This 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 this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include /* See the .h file for comments. */ str_list_type str_list_init P1H(void) { str_list_type ret; STR_LIST_LENGTH (ret) = 0; STR_LIST (ret) = NULL; return ret; } void str_list_add P2C(str_list_type *, l, string, s) { STR_LIST_LENGTH (*l)++; XRETALLOC (STR_LIST (*l), STR_LIST_LENGTH (*l), string); STR_LIST_LAST_ELT (*l) = s; } /* May as well save some reallocations and do everything in a chunk instead of calling str_list_add on each element. */ void str_list_concat P2C(str_list_type *, target, str_list_type, more) { unsigned e; unsigned prev_len = STR_LIST_LENGTH (*target); STR_LIST_LENGTH (*target) += STR_LIST_LENGTH (more); XRETALLOC (STR_LIST (*target), STR_LIST_LENGTH (*target), string); for (e = 0; e < STR_LIST_LENGTH (more); e++) STR_LIST_ELT (*target, prev_len + e) = STR_LIST_ELT (more, e); } /* Concatenate the elements of more to each element of target. This _must_ be done with the first index varying fastest. */ /* Note that we free the old elements of target as well. */ void str_list_concat_elements P2C(str_list_type *, target, str_list_type, more) { if (STR_LIST_LENGTH(more) == 0) { return; } else if (STR_LIST_LENGTH(*target) == 0) { unsigned int i; STR_LIST_LENGTH(*target) = STR_LIST_LENGTH(more); STR_LIST(*target) = (string*)xmalloc(STR_LIST_LENGTH(more)*sizeof(char*)); for (i=0;i!=STR_LIST_LENGTH(more);++i) { STR_LIST_ELT(*target,i)=xstrdup(STR_LIST_ELT(more,i)); } return; } else { unsigned new_len; char ** new_list; unsigned int i,j; new_list = (string*)xmalloc(STR_LIST_LENGTH (*target) * STR_LIST_LENGTH (more) * sizeof(char*)); new_len = 0; for (j = 0; j != STR_LIST_LENGTH(more); ++j) { for (i = 0; i != STR_LIST_LENGTH(*target); ++i) { new_list[new_len] = concat(STR_LIST_ELT(*target,i), STR_LIST_ELT(more,j)); ++new_len; } } for (i = 0; i != STR_LIST_LENGTH(*target); ++i) free(STR_LIST_ELT(*target, i)); free(STR_LIST(*target)); STR_LIST_LENGTH(*target) = new_len; STR_LIST(*target) = new_list; } } /* Free the list (but not the elements within it). */ void str_list_free P1C(str_list_type *, l) { if (STR_LIST (*l)) { free (STR_LIST (*l)); STR_LIST (*l) = NULL; } }