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272
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1 /* Parse printf format string.
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2 Copyright (C) 1999, 2002-2003, 2005, 2007 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License along
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15 with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 #ifndef _PRINTF_PARSE_H
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19 #define _PRINTF_PARSE_H
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20
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21 /* This file can be parametrized with the following macros:
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22 ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
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23 STATIC Set to 'static' to declare the function static. */
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24
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25 #include "printf-args.h"
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26
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27
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28 /* Flags */
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29 #define FLAG_GROUP 1 /* ' flag */
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30 #define FLAG_LEFT 2 /* - flag */
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31 #define FLAG_SHOWSIGN 4 /* + flag */
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32 #define FLAG_SPACE 8 /* space flag */
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33 #define FLAG_ALT 16 /* # flag */
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34 #define FLAG_ZERO 32
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35
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36 /* arg_index value indicating that no argument is consumed. */
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37 #define ARG_NONE (~(size_t)0)
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38
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39 /* xxx_directive: A parsed directive.
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40 xxx_directives: A parsed format string. */
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41
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42 /* A parsed directive. */
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43 typedef struct
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44 {
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45 const char* dir_start;
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46 const char* dir_end;
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47 int flags;
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48 const char* width_start;
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49 const char* width_end;
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50 size_t width_arg_index;
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51 const char* precision_start;
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52 const char* precision_end;
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53 size_t precision_arg_index;
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54 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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55 size_t arg_index;
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56 }
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57 char_directive;
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58
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59 /* A parsed format string. */
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60 typedef struct
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61 {
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62 size_t count;
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63 char_directive *dir;
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64 size_t max_width_length;
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65 size_t max_precision_length;
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66 }
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67 char_directives;
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68
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69 #if ENABLE_UNISTDIO
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70
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71 /* A parsed directive. */
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72 typedef struct
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73 {
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74 const uint8_t* dir_start;
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75 const uint8_t* dir_end;
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76 int flags;
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77 const uint8_t* width_start;
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78 const uint8_t* width_end;
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79 size_t width_arg_index;
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80 const uint8_t* precision_start;
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81 const uint8_t* precision_end;
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82 size_t precision_arg_index;
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83 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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84 size_t arg_index;
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85 }
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86 u8_directive;
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87
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88 /* A parsed format string. */
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89 typedef struct
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90 {
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91 size_t count;
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92 u8_directive *dir;
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93 size_t max_width_length;
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94 size_t max_precision_length;
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95 }
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96 u8_directives;
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97
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98 /* A parsed directive. */
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99 typedef struct
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100 {
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101 const uint16_t* dir_start;
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102 const uint16_t* dir_end;
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103 int flags;
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104 const uint16_t* width_start;
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105 const uint16_t* width_end;
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106 size_t width_arg_index;
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107 const uint16_t* precision_start;
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108 const uint16_t* precision_end;
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109 size_t precision_arg_index;
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110 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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111 size_t arg_index;
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112 }
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113 u16_directive;
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114
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115 /* A parsed format string. */
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116 typedef struct
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117 {
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118 size_t count;
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119 u16_directive *dir;
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120 size_t max_width_length;
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121 size_t max_precision_length;
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122 }
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123 u16_directives;
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124
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125 /* A parsed directive. */
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126 typedef struct
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127 {
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128 const uint32_t* dir_start;
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129 const uint32_t* dir_end;
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130 int flags;
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131 const uint32_t* width_start;
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132 const uint32_t* width_end;
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133 size_t width_arg_index;
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134 const uint32_t* precision_start;
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135 const uint32_t* precision_end;
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136 size_t precision_arg_index;
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137 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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138 size_t arg_index;
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139 }
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140 u32_directive;
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141
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142 /* A parsed format string. */
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143 typedef struct
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144 {
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145 size_t count;
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146 u32_directive *dir;
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147 size_t max_width_length;
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148 size_t max_precision_length;
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149 }
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150 u32_directives;
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151
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152 #endif
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153
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154
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155 /* Parses the format string. Fills in the number N of directives, and fills
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156 in directives[0], ..., directives[N-1], and sets directives[N].dir_start
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157 to the end of the format string. Also fills in the arg_type fields of the
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158 arguments and the needed count of arguments. */
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159 #if ENABLE_UNISTDIO
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160 extern int
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161 ulc_printf_parse (const char *format, char_directives *d, arguments *a);
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162 extern int
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163 u8_printf_parse (const uint8_t *format, u8_directives *d, arguments *a);
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164 extern int
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165 u16_printf_parse (const uint16_t *format, u16_directives *d,
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166 arguments *a);
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167 extern int
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168 u32_printf_parse (const uint32_t *format, u32_directives *d,
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169 arguments *a);
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170 #else
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171 # ifdef STATIC
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172 STATIC
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173 # else
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174 extern
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175 # endif
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176 int printf_parse (const char *format, char_directives *d, arguments *a);
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177 #endif
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178
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179 #endif /* _PRINTF_PARSE_H */
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