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434
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1 /* Parse printf format string.
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2 Copyright (C) 1999, 2002-2003, 2005, 2007, 2009-2010 Free Software
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3 Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3, or (at your option)
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8 any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License along
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16 with this program; if not, write to the Free Software Foundation,
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17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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18
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19 #ifndef _PRINTF_PARSE_H
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20 #define _PRINTF_PARSE_H
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21
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22 /* This file can be parametrized with the following macros:
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23 ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
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24 STATIC Set to 'static' to declare the function static. */
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25
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26 #include "printf-args.h"
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27
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28
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29 /* Flags */
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30 #define FLAG_GROUP 1 /* ' flag */
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31 #define FLAG_LEFT 2 /* - flag */
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32 #define FLAG_SHOWSIGN 4 /* + flag */
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33 #define FLAG_SPACE 8 /* space flag */
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34 #define FLAG_ALT 16 /* # flag */
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35 #define FLAG_ZERO 32
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36
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37 /* arg_index value indicating that no argument is consumed. */
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38 #define ARG_NONE (~(size_t)0)
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39
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40 /* xxx_directive: A parsed directive.
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41 xxx_directives: A parsed format string. */
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42
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43 /* A parsed directive. */
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44 typedef struct
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45 {
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46 const char* dir_start;
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47 const char* dir_end;
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48 int flags;
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49 const char* width_start;
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50 const char* width_end;
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51 size_t width_arg_index;
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52 const char* precision_start;
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53 const char* precision_end;
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54 size_t precision_arg_index;
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55 char conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
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56 size_t arg_index;
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57 }
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58 char_directive;
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59
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60 /* A parsed format string. */
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61 typedef struct
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62 {
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63 size_t count;
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64 char_directive *dir;
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65 size_t max_width_length;
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66 size_t max_precision_length;
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67 }
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68 char_directives;
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69
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70 #if ENABLE_UNISTDIO
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71
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72 /* A parsed directive. */
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73 typedef struct
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74 {
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75 const uint8_t* dir_start;
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76 const uint8_t* dir_end;
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77 int flags;
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78 const uint8_t* width_start;
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79 const uint8_t* width_end;
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80 size_t width_arg_index;
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81 const uint8_t* precision_start;
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82 const uint8_t* precision_end;
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83 size_t precision_arg_index;
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84 uint8_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
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85 size_t arg_index;
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86 }
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87 u8_directive;
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88
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89 /* A parsed format string. */
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90 typedef struct
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91 {
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92 size_t count;
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93 u8_directive *dir;
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94 size_t max_width_length;
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95 size_t max_precision_length;
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96 }
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97 u8_directives;
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98
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99 /* A parsed directive. */
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100 typedef struct
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101 {
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102 const uint16_t* dir_start;
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103 const uint16_t* dir_end;
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104 int flags;
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105 const uint16_t* width_start;
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106 const uint16_t* width_end;
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107 size_t width_arg_index;
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108 const uint16_t* precision_start;
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109 const uint16_t* precision_end;
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110 size_t precision_arg_index;
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111 uint16_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
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112 size_t arg_index;
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113 }
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114 u16_directive;
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115
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116 /* A parsed format string. */
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117 typedef struct
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118 {
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119 size_t count;
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120 u16_directive *dir;
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121 size_t max_width_length;
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122 size_t max_precision_length;
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123 }
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124 u16_directives;
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125
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126 /* A parsed directive. */
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127 typedef struct
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128 {
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129 const uint32_t* dir_start;
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130 const uint32_t* dir_end;
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131 int flags;
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132 const uint32_t* width_start;
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133 const uint32_t* width_end;
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134 size_t width_arg_index;
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135 const uint32_t* precision_start;
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136 const uint32_t* precision_end;
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137 size_t precision_arg_index;
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138 uint32_t conversion; /* d i o u x X f F e E g G a A c s p n U % but not C S */
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139 size_t arg_index;
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140 }
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141 u32_directive;
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142
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143 /* A parsed format string. */
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144 typedef struct
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145 {
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146 size_t count;
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147 u32_directive *dir;
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148 size_t max_width_length;
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149 size_t max_precision_length;
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150 }
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151 u32_directives;
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152
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153 #endif
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154
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155
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156 /* Parses the format string. Fills in the number N of directives, and fills
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157 in directives[0], ..., directives[N-1], and sets directives[N].dir_start
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158 to the end of the format string. Also fills in the arg_type fields of the
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159 arguments and the needed count of arguments. */
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160 #if ENABLE_UNISTDIO
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161 extern int
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162 ulc_printf_parse (const char *format, char_directives *d, arguments *a);
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163 extern int
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164 u8_printf_parse (const uint8_t *format, u8_directives *d, arguments *a);
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165 extern int
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166 u16_printf_parse (const uint16_t *format, u16_directives *d,
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167 arguments *a);
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168 extern int
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169 u32_printf_parse (const uint32_t *format, u32_directives *d,
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170 arguments *a);
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171 #else
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172 # ifdef STATIC
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173 STATIC
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174 # else
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175 extern
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176 # endif
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177 int printf_parse (const char *format, char_directives *d, arguments *a);
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178 #endif
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179
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180 #endif /* _PRINTF_PARSE_H */
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