| 1 | #!/usr/bin/env bash |
| 2 | # |
| 3 | # Test combination of var ops. |
| 4 | |
| 5 | ### String length |
| 6 | v=foo |
| 7 | echo ${#v} |
| 8 | # stdout: 3 |
| 9 | |
| 10 | ### Length of undefined variable |
| 11 | echo ${#undef} |
| 12 | # stdout: 0 |
| 13 | |
| 14 | ### Length of undefined variable with nounset |
| 15 | set -o nounset |
| 16 | echo ${#undef} |
| 17 | # status: 1 |
| 18 | # OK dash status: 2 |
| 19 | |
| 20 | ### Cannot take length of substring slice |
| 21 | # These are runtime errors, but we could make them parse time errors. |
| 22 | v=abcde |
| 23 | echo ${#v:1:3} |
| 24 | # status: 1 |
| 25 | # N-I dash status: 0 |
| 26 | # N-I dash stdout: 5 |
| 27 | |
| 28 | ### Pattern replacement |
| 29 | v=abcde |
| 30 | echo ${v/c*/XX} |
| 31 | # stdout: abXX |
| 32 | # N-I dash status: 2 |
| 33 | # N-I dash stdout-json: "" |
| 34 | |
| 35 | ### Global Pattern replacement with / |
| 36 | s=xx_xx_xx |
| 37 | echo ${s/xx?/yy_} ${s//xx?/yy_} |
| 38 | # stdout: yy_xx_xx yy_yy_xx |
| 39 | # N-I dash status: 2 |
| 40 | # N-I dash stdout-json: "" |
| 41 | |
| 42 | ### Left Anchored Pattern replacement with # |
| 43 | s=xx_xx_xx |
| 44 | echo ${s/?xx/_yy} ${s/#?xx/_yy} |
| 45 | # stdout: xx_yy_xx xx_xx_xx |
| 46 | # N-I dash status: 2 |
| 47 | # N-I dash stdout-json: "" |
| 48 | |
| 49 | ### Right Anchored Pattern replacement with % |
| 50 | s=xx_xx_xx |
| 51 | echo ${s/?xx/_yy} ${s/%?xx/_yy} |
| 52 | # stdout: xx_yy_xx xx_xx_yy |
| 53 | # N-I dash status: 2 |
| 54 | # N-I dash stdout-json: "" |
| 55 | |
| 56 | ### Replace fixed strings |
| 57 | s=xx_xx |
| 58 | echo ${s/xx/yy} ${s//xx/yy} ${s/#xx/yy} ${s/%xx/yy} |
| 59 | # stdout: yy_xx yy_yy yy_xx xx_yy |
| 60 | # N-I dash status: 2 |
| 61 | # N-I dash stdout-json: "" |
| 62 | |
| 63 | ### Replace is longest match |
| 64 | # If it were shortest, then you would just replace the first <html> |
| 65 | s='begin <html></html> end' |
| 66 | echo ${s/<*>/[]} |
| 67 | # stdout: begin [] end |
| 68 | # N-I dash status: 2 |
| 69 | # N-I dash stdout-json: "" |
| 70 | |
| 71 | ### Replace char class |
| 72 | s=xx_xx_xx |
| 73 | echo ${s//[[:alpha:]]/y} ${s//[^[:alpha:]]/-} |
| 74 | # stdout: yy_yy_yy xx-xx-xx |
| 75 | # N-I mksh stdout: xx_xx_xx xx_xx_xx |
| 76 | # N-I dash status: 2 |
| 77 | # N-I dash stdout-json: "" |
| 78 | |
| 79 | ### Pattern replacement ${v/} is not valid |
| 80 | v=abcde |
| 81 | echo -${v/}- |
| 82 | echo status=$? |
| 83 | # status: 2 |
| 84 | # stdout-json: "" |
| 85 | # N-I dash status: 2 |
| 86 | # N-I dash stdout-json: "" |
| 87 | # BUG bash/mksh status: 0 |
| 88 | # BUG bash/mksh stdout-json: "-abcde-\nstatus=0\n" |
| 89 | |
| 90 | ### Pattern replacement ${v//} is not valid |
| 91 | v='a/b/c' |
| 92 | echo -${v//}- |
| 93 | echo status=$? |
| 94 | # status: 2 |
| 95 | # stdout-json: "" |
| 96 | # N-I dash status: 2 |
| 97 | # N-I dash stdout-json: "" |
| 98 | # BUG bash/mksh status: 0 |
| 99 | # BUG bash/mksh stdout-json: "-a/b/c-\nstatus=0\n" |
| 100 | |
| 101 | ### ${v/a} is the same as ${v/a/} -- no replacement string |
| 102 | v='aabb' |
| 103 | echo ${v/a} |
| 104 | echo status=$? |
| 105 | # stdout-json: "abb\nstatus=0\n" |
| 106 | # N-I dash stdout-json: "" |
| 107 | # N-I dash status: 2 |
| 108 | |
| 109 | ### String slice |
| 110 | foo=abcdefg |
| 111 | echo ${foo:1:3} |
| 112 | # stdout: bcd |
| 113 | # N-I dash status: 2 |
| 114 | # N-I dash stdout-json: "" |
| 115 | |
| 116 | ### Negative string slice |
| 117 | foo=abcdefg |
| 118 | echo ${foo: -4:3} |
| 119 | # stdout: def |
| 120 | # N-I dash status: 2 |
| 121 | # N-I dash stdout-json: "" |
| 122 | |
| 123 | ### String slice with math |
| 124 | # I think this is the $(()) language inside? |
| 125 | i=1 |
| 126 | foo=abcdefg |
| 127 | echo ${foo: i-3-2 : i + 2} |
| 128 | # stdout: def |
| 129 | # N-I dash status: 2 |
| 130 | # N-I dash stdout-json: "" |