436e367874
Simplify the preprocessor code by factoring out the common string list handling code. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 1996-2016 The NASM Authors - All Rights Reserved
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* See the file AUTHORS included with the NASM distribution for
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* the specific copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ----------------------------------------------------------------------- */
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/*
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* strlist.c - simple linked list of strings
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*/
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#include "compiler.h"
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#include <string.h>
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#include "strlist.h"
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static inline StrList *nasm_str_to_strlist(const char *str)
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{
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size_t l = strlen(str) + 1;
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StrList *sl = nasm_malloc(l + sizeof sl->next);
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memcpy(sl->str, str, l);
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sl->next = NULL;
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return sl;
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}
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/*
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* Append a string list entry to a string list if and only if it isn't
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* already there. Return true if it was added.
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*/
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bool nasm_add_to_strlist(StrList **head, StrList *entry)
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{
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StrList *list;
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if (!head)
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return false;
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list = *head;
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while (list) {
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if (!strcmp(list->str, entry->str))
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return false;
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head = &list->next;
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list = list->next;
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}
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*head = entry;
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entry->next = NULL;
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return true;
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}
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/*
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* Append a string to a string list if and only if it isn't
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* already there. Return true if it was added.
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*/
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bool nasm_add_string_to_strlist(StrList **head, const char *str)
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{
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StrList *list;
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if (!head)
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return false;
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list = *head;
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while (list) {
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if (!strcmp(list->str, str))
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return false;
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head = &list->next;
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list = list->next;
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}
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*head = nasm_str_to_strlist(str);
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return true;
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}
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