1 | BMXPRS ; IHS/OIT/HMW - BMX WINDOWS UTILS ;
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2 | ;;2.2;BMX;;Sep 07, 2010
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3 | ;
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4 | ;
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5 | PARSE(X) ;EP-Parse SQL Statement into array
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6 | ;Input SQL statement as X
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7 | ;Returns BMXTK() array
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8 | ;Errors returned in BMXERR
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9 | ;
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10 | D PRE
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11 | Q:$D(BMXERR)
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12 | D POST
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13 | Q
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14 | ;
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15 | POST2 ;EP - Remove commas from BMXTK
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16 | N J,K
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17 | S J=0 F S J=$O(BMXTK(J)) Q:'+J D
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18 | . S K=$O(BMXTK(J))
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19 | . I +K,","=$G(BMXTK(K)) D
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20 | . . K BMXTK(K)
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21 | . . D PACK(J)
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22 | . . Q
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23 | . Q
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24 | Q
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25 | ;
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26 | POST ;
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27 | ;Combine multi-character operators
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28 | N J
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29 | S J=0 F S J=$O(BMXTK(J)) Q:'+J D
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30 | . I ">"=BMXTK(J) D Q
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31 | . . I "="[$G(BMXTK(J+1)) D Q
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32 | . . . S BMXTK(J)=BMXTK(J)_"="
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33 | . . . K BMXTK(J+1)
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34 | . . . D PACK(J)
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35 | . . I "<"[$G(BMXTK(J+1)) D Q
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36 | . . . S BMXTK(J)="<"_BMXTK(J)
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37 | . . . K BMXTK(J+1)
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38 | . . . D PACK(J)
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39 | . I "<"=BMXTK(J) D Q
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40 | . . I "=>"[$G(BMXTK(J+1)) D
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41 | . . . S BMXTK(J)=BMXTK(J)_BMXTK(J+1)
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42 | . . . K BMXTK(J+1)
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43 | . . . D PACK(J)
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44 | . I "="=BMXTK(J) D Q
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45 | . . I "<>"[$G(BMXTK(J+1)) D
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46 | . . . S BMXTK(J)=BMXTK(J+1)_BMXTK(J)
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47 | . . . K BMXTK(J+1)
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48 | . . . D PACK(J)
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49 | Q
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50 | ;
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51 | PACK(J) ;
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52 | F S J=$O(BMXTK(J)) Q:'+J D
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53 | . S BMXTK(J-1)=BMXTK(J)
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54 | . K BMXTK(J)
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55 | Q
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56 | ;
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57 | PRE N P,T,Q,Q1,A,B S (P,T,Q)=0,BMXTK="",A=0
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58 | START S A=A+1
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59 | S B=$E(X,A)
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60 | I B="" G B5
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61 | I 'Q G QUOTE
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62 | I B=$C(39) G QUOTE
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63 | S BMXTK=BMXTK_B G START
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64 | QUOTE I B'=$C(39) G SPACE
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65 | I Q G QUOTE2
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66 | ;S Q=1,BMXTK=B G START
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67 | S Q=1,BMXTK=BMXTK_B G START
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68 | QUOTE2 S Q1=B,A=A+1,B=$E(X,A)
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69 | I B']"" G QUOTE3
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70 | I B'=$C(39) G QUOTE3
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71 | S BMXTK=BMXTK_Q1_B G START
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72 | QUOTE3 S A=A-1,B=Q1,BMXTK=BMXTK_B,Q=0 G START
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73 | SPACE I B'=" " G OP
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74 | I BMXTK]"" S T=T+1,BMXTK(T)=BMXTK,BMXTK=""
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75 | G START
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76 | OP I "=><"'[B G OPAREN
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77 | I BMXTK]"" S T=T+1,BMXTK(T)=BMXTK,BMXTK=""
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78 | S T=T+1,BMXTK(T)=B,BMXTK=""
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79 | G START
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80 | OPAREN I B'="(" G CPAREN
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81 | S P=P+1
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82 | I BMXTK]"" S T=T+1,BMXTK(T)=BMXTK,BMXTK=""
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83 | S T=T+1,BMXTK(T)=B G START
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84 | CPAREN I B'=")" G B2
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85 | I P G B1
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86 | G B0
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87 | ;
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88 | B0 S BMXERR="SQL SYNTAX ERROR" D ERROR G B5
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89 | B1 S P=P-1
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90 | I BMXTK]"" S T=T+1,BMXTK(T)=BMXTK,BMXTK=""
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91 | S T=T+1,BMXTK(T)=B G START
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92 | B2 I B'="," G B3
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93 | S T=T+1,BMXTK(T)=BMXTK,T=T+1,BMXTK(T)=",",BMXTK="" G START
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94 | B3 S BMXTK=BMXTK_B
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95 | B4 G START
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96 | B5 I BMXTK]"" S T=T+1,BMXTK(T)=BMXTK
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97 | I $D(BMXERR) G B6
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98 | I P S BMXERR="SQL SYNTAX ERROR: MATCHING PARENTHESIS NOT FOUND" D ERROR
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99 | E I Q S BMXERR="SQL SYNTAX ERROR: MATCHING QUOTE NOT FOUND" D ERROR
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100 | I P>0 G START
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101 | B6 Q
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102 | ;
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103 | ERROR ;W !,"ERROR=",BMXERR,! Q
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104 | Q
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