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23 * @file svn_eol_private.h
24 * @brief Subversion's EOL functions - Internal routines
27 #ifndef SVN_EOL_PRIVATE_H
28 #define SVN_EOL_PRIVATE_H
30 #include <apr_pools.h>
33 #include "svn_types.h"
34 #include "svn_error.h"
38 #endif /* __cplusplus */
40 /* Constants used by various chunky string processing functions.
42 #if APR_SIZEOF_VOIDP == 8
43 # define SVN__LOWER_7BITS_SET 0x7f7f7f7f7f7f7f7f
44 # define SVN__BIT_7_SET 0x8080808080808080
45 # define SVN__R_MASK 0x0a0a0a0a0a0a0a0a
46 # define SVN__N_MASK 0x0d0d0d0d0d0d0d0d
48 # define SVN__LOWER_7BITS_SET 0x7f7f7f7f
49 # define SVN__BIT_7_SET 0x80808080
50 # define SVN__R_MASK 0x0a0a0a0a
51 # define SVN__N_MASK 0x0d0d0d0d
54 /* Generic EOL character helper routines */
56 /* Look for the start of an end-of-line sequence (i.e. CR or LF)
57 * in the array pointed to by @a buf , of length @a len.
58 * If such a byte is found, return the pointer to it, else return NULL.
63 svn_eol__find_eol_start(char *buf, apr_size_t len);
65 /* Return the first eol marker found in buffer @a buf as a NUL-terminated
66 * string, or NULL if no eol marker is found. Do not examine more than
67 * @a len bytes in @a buf.
69 * If the last valid character of @a buf is the first byte of a
70 * potentially two-byte eol sequence, just return that single-character
71 * sequence, that is, assume @a buf represents a CR-only or LF-only file.
72 * This is correct for callers that pass an entire file at once, and is
73 * no more likely to be incorrect than correct for any caller that doesn't.
75 * The returned string is statically allocated, i.e. it is NOT a pointer
76 * to an address within @a buf.
78 * If an eol marker is found and @a eolp is not NULL, store in @a *eolp
79 * the address within @a buf of the first byte of the eol marker.
80 * This allows callers to tell whether there might be more than one eol
81 * sequence in @a buf, as well as detect two-byte eol sequences that
82 * span buffer boundaries.
87 svn_eol__detect_eol(char *buf, apr_size_t len, char **eolp);
91 #endif /* __cplusplus */
93 #endif /* SVN_EOL_PRIVATE_H */