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https://github.com/openvswitch/ovs
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bdda5aca7b
Until now, failure to parse a flow in the ofp-parse module has caused the program to abort immediately with a fatal error. This makes it hard to use these functions from any long-lived program. This commit fixes the problem. Signed-off-by: Ben Pfaff <blp@nicira.com>
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/*
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* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef DYNAMIC_STRING_H
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#define DYNAMIC_STRING_H 1
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <time.h>
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#include "compiler.h"
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/* A "dynamic string", that is, a buffer that can be used to construct a
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* string across a series of operations that extend or modify it.
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*
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* The 'string' member does not always point to a null-terminated string.
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* Initially it is NULL, and even when it is nonnull, some operations do not
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* ensure that it is null-terminated. Use ds_cstr() to ensure that memory is
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* allocated for the string and that it is null-terminated. */
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struct ds {
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char *string; /* Null-terminated string. */
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size_t length; /* Bytes used, not including null terminator. */
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size_t allocated; /* Bytes allocated, not including null terminator. */
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};
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#define DS_EMPTY_INITIALIZER { NULL, 0, 0 }
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void ds_init(struct ds *);
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void ds_clear(struct ds *);
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void ds_truncate(struct ds *, size_t new_length);
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void ds_reserve(struct ds *, size_t min_length);
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char *ds_put_uninit(struct ds *, size_t n);
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static inline void ds_put_char(struct ds *, char);
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void ds_put_utf8(struct ds *, int uc);
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void ds_put_char_multiple(struct ds *, char, size_t n);
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void ds_put_buffer(struct ds *, const char *, size_t n);
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void ds_put_cstr(struct ds *, const char *);
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void ds_put_and_free_cstr(struct ds *, char *);
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void ds_put_format(struct ds *, const char *, ...) PRINTF_FORMAT(2, 3);
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void ds_put_format_valist(struct ds *, const char *, va_list)
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PRINTF_FORMAT(2, 0);
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void ds_put_printable(struct ds *, const char *, size_t);
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void ds_put_hex_dump(struct ds *ds, const void *buf_, size_t size,
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uintptr_t ofs, bool ascii);
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int ds_get_line(struct ds *, FILE *);
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int ds_get_preprocessed_line(struct ds *, FILE *, int *line_number);
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int ds_get_test_line(struct ds *, FILE *);
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void ds_put_strftime(struct ds *, const char *template, time_t when, bool utc)
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STRFTIME_FORMAT(2);
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char *xastrftime(const char *template, time_t when, bool utc)
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STRFTIME_FORMAT(1);
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char *ds_cstr(struct ds *);
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const char *ds_cstr_ro(const struct ds *);
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char *ds_steal_cstr(struct ds *);
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void ds_destroy(struct ds *);
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void ds_swap(struct ds *, struct ds *);
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int ds_last(const struct ds *);
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void ds_chomp(struct ds *, int c);
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/* Inline functions. */
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void ds_put_char__(struct ds *, char);
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static inline void
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ds_put_char(struct ds *ds, char c)
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{
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if (ds->length < ds->allocated) {
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ds->string[ds->length++] = c;
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ds->string[ds->length] = '\0';
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} else {
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ds_put_char__(ds, c);
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}
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}
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#endif /* dynamic-string.h */
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