thodg/libgit2/src/parse.h

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• Hash : dbeadf8a
  Author :
  Date : 2019-07-11T10:56:05
  

  config_parse: provide parser init and dispose functions
  
  Right now, all configuration file backends are expected to
  directly mess with the configuration parser's internals in order
  to set it up. Let's avoid doing that by implementing both a
  `git_config_parser_init` and `git_config_parser_dispose` function
  to clearly define the interface between configuration backends
  and the parser.
  
  Ideally, we would make the `git_config_parser` structure
  definition private to its implementation. But as that would
  require an additional memory allocation that was not required
  before we just live with it being visible to others.
  

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• src/parse.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #ifndef INCLUDE_parse_h__
  #define INCLUDE_parse_h__
  
  #include "common.h"
  
  typedef struct {
  	/* Original content buffer */
  	const char *content;
  	size_t content_len;
  
  	/* The remaining (unparsed) buffer */
  	const char *remain;
  	size_t remain_len;
  
  	const char *line;
  	size_t line_len;
  	size_t line_num;
  } git_parse_ctx;
  
  #define GIT_PARSE_CTX_INIT { 0 }
  
  int git_parse_ctx_init(git_parse_ctx *ctx, const char *content, size_t content_len);
  void git_parse_ctx_clear(git_parse_ctx *ctx);
  
  #define git_parse_err(...) \
  	( git_error_set(GIT_ERROR_PATCH, __VA_ARGS__), -1 )
  
  #define git_parse_ctx_contains_s(ctx, str) \
  	git_parse_ctx_contains(ctx, str, sizeof(str) - 1)
  
  GIT_INLINE(bool) git_parse_ctx_contains(
  	git_parse_ctx *ctx, const char *str, size_t len)
  {
  	return (ctx->line_len >= len && memcmp(ctx->line, str, len) == 0);
  }
  
  void git_parse_advance_line(git_parse_ctx *ctx);
  void git_parse_advance_chars(git_parse_ctx *ctx, size_t char_cnt);
  int git_parse_advance_expected(
  	git_parse_ctx *ctx,
  	const char *expected,
  	size_t expected_len);
  
  #define git_parse_advance_expected_str(ctx, str) \
  	git_parse_advance_expected(ctx, str, strlen(str))
  
  int git_parse_advance_ws(git_parse_ctx *ctx);
  int git_parse_advance_nl(git_parse_ctx *ctx);
  int git_parse_advance_digit(int64_t *out, git_parse_ctx *ctx, int base);
  
  enum GIT_PARSE_PEEK_FLAGS {
  	GIT_PARSE_PEEK_SKIP_WHITESPACE = (1 << 0)
  };
  
  int git_parse_peek(char *out, git_parse_ctx *ctx, int flags);
  
  #endif
  

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