reSIProcate/stack: MethodHash.cxx Source File

reSIProcate/stack 9694
00001 /* C++ code produced by gperf version 3.0.4 */
00002 /* Command-line: gperf -C -D -E -L C++ -t -k '*' --compare-strncmp -Z MethodHash MethodHash.gperf  */
00003 
00004 #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
00005       && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
00006       && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
00007       && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
00008       && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
00009       && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
00010       && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
00011       && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
00012       && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
00013       && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
00014       && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
00015       && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
00016       && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
00017       && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
00018       && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
00019       && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
00020       && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
00021       && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
00022       && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
00023       && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
00024       && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
00025       && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
00026       && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
00027 /* The character set is not based on ISO-646.  */
00028 #error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
00029 #endif
00030 
00031 #line 1 "MethodHash.gperf"
00032 
00033 #include <string.h>
00034 #include <ctype.h>
00035 #include "resip/stack/MethodTypes.hxx"
00036 
00037 namespace resip
00038 {
00039 #line 9 "MethodHash.gperf"
00040 struct methods { const char *name; MethodTypes type; };
00041 /* maximum key range = 31, duplicates = 0 */
00042 
00043 class MethodHash
00044 {
00045 private:
00046   static inline unsigned int hash (const char *str, unsigned int len);
00047 public:
00048   static const struct methods *in_word_set (const char *str, unsigned int len);
00049 };
00050 
00051 inline unsigned int
00052 MethodHash::hash (register const char *str, register unsigned int len)
00053 {
00054   static const unsigned char asso_values[] =
00055     {
00056       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00057       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00058       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00059       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00060       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00061       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00062       35, 35, 35, 35, 35,  5, 10,  5,  5,  0,
00063        0, 15,  0,  0, 35,  0,  0,  0,  0,  0,
00064        0, 35,  0,  0,  0,  0,  0, 35, 35,  5,
00065       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00066       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00067       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00068       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00069       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00070       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00071       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00072       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00073       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00074       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00075       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00076       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00077       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00078       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00079       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00080       35, 35, 35, 35, 35, 35, 35, 35, 35, 35,
00081       35, 35, 35, 35, 35, 35
00082     };
00083   register int hval = len;
00084 
00085   switch (hval)
00086     {
00087       default:
00088         hval += asso_values[(unsigned char)str[8]];
00089       /*FALLTHROUGH*/
00090       case 8:
00091         hval += asso_values[(unsigned char)str[7]];
00092       /*FALLTHROUGH*/
00093       case 7:
00094         hval += asso_values[(unsigned char)str[6]];
00095       /*FALLTHROUGH*/
00096       case 6:
00097         hval += asso_values[(unsigned char)str[5]];
00098       /*FALLTHROUGH*/
00099       case 5:
00100         hval += asso_values[(unsigned char)str[4]];
00101       /*FALLTHROUGH*/
00102       case 4:
00103         hval += asso_values[(unsigned char)str[3]];
00104       /*FALLTHROUGH*/
00105       case 3:
00106         hval += asso_values[(unsigned char)str[2]];
00107       /*FALLTHROUGH*/
00108       case 2:
00109         hval += asso_values[(unsigned char)str[1]];
00110       /*FALLTHROUGH*/
00111       case 1:
00112         hval += asso_values[(unsigned char)str[0]];
00113         break;
00114     }
00115   return hval;
00116 }
00117 
00118 const struct methods *
00119 MethodHash::in_word_set (register const char *str, register unsigned int len)
00120 {
00121   enum
00122     {
00123       TOTAL_KEYWORDS = 16,
00124       MIN_WORD_LENGTH = 3,
00125       MAX_WORD_LENGTH = 9,
00126       MIN_HASH_VALUE = 4,
00127       MAX_HASH_VALUE = 34
00128     };
00129 
00130   static const struct methods wordlist[] =
00131     {
00132 #line 24 "MethodHash.gperf"
00133       {"INFO", INFO},
00134 #line 19 "MethodHash.gperf"
00135       {"REFER", REFER},
00136 #line 14 "MethodHash.gperf"
00137       {"INVITE", INVITE},
00138 #line 16 "MethodHash.gperf"
00139       {"OPTIONS", OPTIONS},
00140 #line 22 "MethodHash.gperf"
00141       {"RESPONSE", RESPONSE},
00142 #line 15 "MethodHash.gperf"
00143       {"NOTIFY", NOTIFY},
00144 #line 25 "MethodHash.gperf"
00145       {"SERVICE", SERVICE},
00146 #line 11 "MethodHash.gperf"
00147       {"ACK", ACK},
00148 #line 17 "MethodHash.gperf"
00149       {"PRACK", PRACK},
00150 #line 26 "MethodHash.gperf"
00151       {"UPDATE", UPDATE},
00152 #line 18 "MethodHash.gperf"
00153       {"PUBLISH", PUBLISH},
00154 #line 12 "MethodHash.gperf"
00155       {"BYE", BYE},
00156 #line 13 "MethodHash.gperf"
00157       {"CANCEL", CANCEL},
00158 #line 20 "MethodHash.gperf"
00159       {"REGISTER", REGISTER},
00160 #line 23 "MethodHash.gperf"
00161       {"MESSAGE", MESSAGE},
00162 #line 21 "MethodHash.gperf"
00163       {"SUBSCRIBE", SUBSCRIBE}
00164     };
00165 
00166   static const signed char lookup[] =
00167     {
00168       -1, -1, -1, -1,  0,  1,  2,  3,  4, -1, -1,  5,  6,  7,
00169       -1,  8,  9, 10, 11, -1, -1, 12, -1, 13, -1, -1, -1, 14,
00170       -1, -1, -1, -1, -1, -1, 15
00171     };
00172 
00173   if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
00174     {
00175       register int key = hash (str, len);
00176 
00177       if (key <= MAX_HASH_VALUE && key >= 0)
00178         {
00179           register int index = lookup[key];
00180 
00181           if (index >= 0)
00182             {
00183               register const char *s = wordlist[index].name;
00184 
00185               if (*str == *s && !strncmp (str + 1, s + 1, len - 1) && s[len] == '\0')
00186                 return &wordlist[index];
00187             }
00188         }
00189     }
00190   return 0;
00191 }
00192 #line 27 "MethodHash.gperf"
00193 
00194 }