parse.h File Reference

Contains some low-level parsing functions, mostly used in the _frm_str family of functions. More...

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Macros

#define LDNS_PARSE_SKIP_SPACE   "\f\n\r\v"
 
#define LDNS_PARSE_NORMAL   " \f\n\r\t\v"
 
#define LDNS_PARSE_NO_NL   " \t"
 
#define LDNS_MAX_LINELEN   10230
 
#define LDNS_MAX_KEYWORDLEN   32
 

Typedefs

typedef enum ldns_enum_directive ldns_directive
 

Enumerations

enum  ldns_enum_directive { LDNS_DIR_TTL, LDNS_DIR_ORIGIN, LDNS_DIR_INCLUDE }
 different type of directives in zone files We now deal with $TTL, $ORIGIN and $INCLUDE. More...
 

Functions

ssize_t ldns_fget_token (FILE *f, char *token, const char *delim, size_t limit)
 returns a token/char from the stream F. More...
 
ssize_t ldns_fget_token_l (FILE *f, char *token, const char *delim, size_t limit, int *line_nr)
 returns a token/char from the stream F. More...
 
ssize_t ldns_bget_token (ldns_buffer *b, char *token, const char *delim, size_t limit)
 returns a token/char from the buffer b. More...
 
ssize_t ldns_fget_keyword_data (FILE *f, const char *keyword, const char *k_del, char *data, const char *d_del, size_t data_limit)
 
ssize_t ldns_fget_keyword_data_l (FILE *f, const char *keyword, const char *k_del, char *data, const char *d_del, size_t data_limit, int *line_nr)
 
ssize_t ldns_bget_keyword_data (ldns_buffer *b, const char *keyword, const char *k_del, char *data, const char *d_del, size_t data_limit)
 
int ldns_bgetc (ldns_buffer *buffer)
 returns the next character from a buffer. More...
 
void ldns_bskipcs (ldns_buffer *buffer, const char *s)
 skips all of the characters in the given string in the buffer, moving the position to the first character that is not in *s. More...
 
void ldns_fskipcs (FILE *fp, const char *s)
 skips all of the characters in the given string in the fp, moving the position to the first character that is not in *s. More...
 
void ldns_fskipcs_l (FILE *fp, const char *s, int *line_nr)
 skips all of the characters in the given string in the fp, moving the position to the first character that is not in *s. More...
 

Detailed Description

Contains some low-level parsing functions, mostly used in the _frm_str family of functions.

Definition in file parse.h.

Macro Definition Documentation

#define LDNS_PARSE_SKIP_SPACE   "\f\n\r\v"

Definition at line 20 of file parse.h.

#define LDNS_PARSE_NORMAL   " \f\n\r\t\v"

Definition at line 21 of file parse.h.

#define LDNS_PARSE_NO_NL   " \t"

Definition at line 22 of file parse.h.

#define LDNS_MAX_LINELEN   10230

Definition at line 23 of file parse.h.

#define LDNS_MAX_KEYWORDLEN   32

Definition at line 24 of file parse.h.

Typedef Documentation

Definition at line 45 of file parse.h.

Enumeration Type Documentation

different type of directives in zone files We now deal with $TTL, $ORIGIN and $INCLUDE.

The latter is not implemented in ldns (yet)

Enumerator
LDNS_DIR_TTL 
LDNS_DIR_ORIGIN 
LDNS_DIR_INCLUDE 

Definition at line 39 of file parse.h.

Function Documentation

ssize_t ldns_fget_token ( FILE *  f,
char *  token,
const char *  delim,
size_t  limit 
)

returns a token/char from the stream F.

This function deals with ( and ) in the stream, and ignores them when encountered

Parameters
[in]*fthe file to read from
[out]*tokenthe read token is put here
[in]*delimchars at which the parsing should stop
[in]*limithow much to read. If 0 the builtin maximum is used
Returns
0 on error of EOF of the stream F. Otherwise return the length of what is read

Definition at line 25 of file parse.c.

References ldns_fget_token_l().

ssize_t ldns_fget_token_l ( FILE *  f,
char *  token,
const char *  delim,
size_t  limit,
int *  line_nr 
)

returns a token/char from the stream F.

This function deals with ( and ) in the stream, and ignores when it finds them.

Parameters
[in]*fthe file to read from
[out]*tokenthe token is put here
[in]*delimchars at which the parsing should stop
[in]*limithow much to read. If 0 use builtin maximum
[in]line_nrpointer to an integer containing the current line number (for debugging purposes)
Returns
0 on error of EOF of F otherwise return the length of what is read

Definition at line 31 of file parse.c.

References ldns_fskipcs_l(), and LDNS_PARSE_NORMAL.

ssize_t ldns_bget_token ( ldns_buffer b,
char *  token,
const char *  delim,
size_t  limit 
)

returns a token/char from the buffer b.

This function deals with ( and ) in the buffer, and ignores when it finds them.

Parameters
[in]*bthe buffer to read from
[out]*tokenthe token is put here
[in]*delimchars at which the parsing should stop
[in]*limithow much to read. If 0 the builtin maximum is used
Returns
0 on error of EOF of b. Otherwise return the length of what is read

Definition at line 219 of file parse.c.

References ldns_bgetc(), ldns_bskipcs(), and LDNS_PARSE_NORMAL.

ssize_t ldns_fget_keyword_data ( FILE *  f,
const char *  keyword,
const char *  k_del,
char *  data,
const char *  d_del,
size_t  data_limit 
)

Definition at line 176 of file parse.c.

References ldns_fget_keyword_data_l().

ssize_t ldns_fget_keyword_data_l ( FILE *  f,
const char *  keyword,
const char *  k_del,
char *  data,
const char *  d_del,
size_t  data_limit,
int *  line_nr 
)
ssize_t ldns_bget_keyword_data ( ldns_buffer b,
const char *  keyword,
const char *  k_del,
char *  data,
const char *  d_del,
size_t  data_limit 
)

Definition at line 403 of file parse.c.

References ldns_bget_token(), LDNS_FREE, LDNS_MAX_KEYWORDLEN, and LDNS_XMALLOC.

int ldns_bgetc ( ldns_buffer buffer)

returns the next character from a buffer.

Advances the position pointer with 1. When end of buffer is reached returns EOF. This is the buffer's equivalent for getc().

Parameters
[in]*bufferbuffer to read from
Returns
EOF on failure otherwise return the character

Definition at line 157 of file buffer.c.

References ldns_struct_buffer::_position.

void ldns_bskipcs ( ldns_buffer buffer,
const char *  s 
)

skips all of the characters in the given string in the buffer, moving the position to the first character that is not in *s.

Parameters
[in]*bufferbuffer to use
[in]*scharacters to skip
Returns
void

Definition at line 349 of file parse.c.

References ldns_struct_buffer::_limit, and ldns_struct_buffer::_position.

void ldns_fskipcs ( FILE *  fp,
const char *  s 
)

skips all of the characters in the given string in the fp, moving the position to the first character that is not in *s.

Parameters
[in]*fpfile to use
[in]*scharacters to skip
Returns
void

Definition at line 372 of file parse.c.

References ldns_fskipcs_l().

void ldns_fskipcs_l ( FILE *  fp,
const char *  s,
int *  line_nr 
)

skips all of the characters in the given string in the fp, moving the position to the first character that is not in *s.

Parameters
[in]*fpfile to use
[in]*scharacters to skip
[in]line_nrpointer to an integer containing the current line number (for debugging purposes)
Returns
void

Definition at line 378 of file parse.c.