| | 1 | /* |
| | 2 | ******************************************************************************* |
| | 3 | * |
| | 4 | * Copyright (C) 2000-2004, International Business Machines |
| | 5 | * Corporation and others. All Rights Reserved. |
| | 6 | * |
| | 7 | ******************************************************************************* |
| | 8 | * file name: uparse.h |
| | 9 | * encoding: US-ASCII |
| | 10 | * tab size: 8 (not used) |
| | 11 | * indentation:4 |
| | 12 | * |
| | 13 | * created on: 2000apr18 |
| | 14 | * created by: Markus W. Scherer |
| | 15 | * |
| | 16 | * This file provides a parser for files that are delimited by one single |
| | 17 | * character like ';' or TAB. Example: the Unicode Character Properties files |
| | 18 | * like UnicodeData.txt are semicolon-delimited. |
| | 19 | */ |
| | 20 | |
| | 21 | #ifndef __UPARSE_H__ |
| | 22 | #define __UPARSE_H__ |
| | 23 | |
| | 24 | #include "unicode/utypes.h" |
| | 25 | |
| | 26 | U_CDECL_BEGIN |
| | 27 | |
| | 28 | /** |
| | 29 | * Skip space ' ' and TAB '\t' characters. |
| | 30 | * |
| | 31 | * @param s Pointer to characters. |
| | 32 | * @return Pointer to first character at or after s that is not a space or TAB. |
| | 33 | */ |
| | 34 | U_CAPI const char * U_EXPORT2 |
| | 35 | u_skipWhitespace(const char *s); |
| | 36 | |
| | 37 | /** Function type for u_parseDelimitedFile(). */ |
| | 38 | typedef void U_CALLCONV |
| | 39 | UParseLineFn(void *context, |
| | 40 | char *fields[][2], |
| | 41 | int32_t fieldCount, |
| | 42 | UErrorCode *pErrorCode); |
| | 43 | |
| | 44 | /** |
| | 45 | * Parser for files that are similar to UnicodeData.txt: |
| | 46 | * This function opens the file and reads it line by line. It skips empty lines |
| | 47 | * and comment lines that start with a '#'. |
| | 48 | * All other lines are separated into fields with one delimiter character |
| | 49 | * (semicolon for Unicode Properties files) between two fields. The last field in |
| | 50 | * a line does not need to be terminated with a delimiter. |
| | 51 | * |
| | 52 | * For each line, after segmenting it, a line function is called. |
| | 53 | * It gets passed the array of field start and limit pointers that is |
| | 54 | * passed into this parser and filled by it for each line. |
| | 55 | * For each field i of the line, the start pointer in fields[i][0] |
| | 56 | * points to the beginning of the field, while the limit pointer in fields[i][1] |
| | 57 | * points behind the field, i.e., to the delimiter or the line end. |
| | 58 | * |
| | 59 | * The context parameter of the line function is |
| | 60 | * the same as the one for the parse function. |
| | 61 | * |
| | 62 | * The line function may modify the contents of the fields including the |
| | 63 | * limit characters. |
| | 64 | * |
| | 65 | * If the file cannot be opened, or there is a parsing error or a field function |
| | 66 | * sets *pErrorCode, then the parser returns with *pErrorCode set to an error code. |
| | 67 | */ |
| | 68 | U_CAPI void U_EXPORT2 |
| | 69 | u_parseDelimitedFile(const char *filename, char delimiter, |
| | 70 | char *fields[][2], int32_t fieldCount, |
| | 71 | UParseLineFn *lineFn, void *context, |
| | 72 | UErrorCode *pErrorCode); |
| | 73 | |
| | 74 | /** |
| | 75 | * Parse a string of code points like 0061 0308 0300. |
| | 76 | * s must end with either ';' or NUL. |
| | 77 | * |
| | 78 | * @return Number of code points. |
| | 79 | */ |
| | 80 | U_CAPI int32_t U_EXPORT2 |
| | 81 | u_parseCodePoints(const char *s, |
| | 82 | uint32_t *dest, int32_t destCapacity, |
| | 83 | UErrorCode *pErrorCode); |
| | 84 | |
| | 85 | /** |
| | 86 | * Parse a list of code points like 0061 0308 0300 |
| | 87 | * into a UChar * string. |
| | 88 | * s must end with either ';' or NUL. |
| | 89 | * |
| | 90 | * Set the first code point in *pFirst. |
| | 91 | * |
| | 92 | * @param s Input char * string. |
| | 93 | * @param dest Output string buffer. |
| | 94 | * @param destCapacity Capacity of dest in numbers of UChars. |
| | 95 | * @param pFirst If pFirst!=NULL the *pFirst will be set to the first |
| | 96 | * code point in the string. |
| | 97 | * @param pErrorCode ICU error code. |
| | 98 | * @return The length of the string in numbers of UChars. |
| | 99 | */ |
| | 100 | U_CAPI int32_t U_EXPORT2 |
| | 101 | u_parseString(const char *s, |
| | 102 | UChar *dest, int32_t destCapacity, |
| | 103 | uint32_t *pFirst, |
| | 104 | UErrorCode *pErrorCode); |
| | 105 | |
| | 106 | /** |
| | 107 | * Parse a code point range like |
| | 108 | * 0085 or |
| | 109 | * 4E00..9FA5. |
| | 110 | * |
| | 111 | * s must contain such a range and end with either ';' or NUL. |
| | 112 | * |
| | 113 | * @return Length of code point range, end-start+1 |
| | 114 | */ |
| | 115 | U_CAPI int32_t U_EXPORT2 |
| | 116 | u_parseCodePointRange(const char *s, |
| | 117 | uint32_t *pStart, uint32_t *pEnd, |
| | 118 | UErrorCode *pErrorCode); |
| | 119 | |
| | 120 | |
| | 121 | U_CAPI int32_t U_EXPORT2 |
| | 122 | u_parseUTF8(const char *source, int32_t sLen, char *dest, int32_t destCapacity, UErrorCode *status); |
| | 123 | |
| | 124 | U_CDECL_END |
| | 125 | |
| | 126 | #endif |
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