diff --git a/builtin.cpp b/builtin.cpp index 6f7cc33c6..1420e33c1 100644 --- a/builtin.cpp +++ b/builtin.cpp @@ -2301,6 +2301,7 @@ static int builtin_read(parser_t &parser, wchar_t **argv) int exit_res=STATUS_BUILTIN_OK; const wchar_t *mode_name = READ_MODE_NAME; int shell = 0; + int array = 0; woptind=0; @@ -2345,6 +2346,10 @@ static int builtin_read(parser_t &parser, wchar_t **argv) L"shell", no_argument, 0, 's' } , + { + L"array", no_argument, 0, 'a' + } + , { L"help", no_argument, 0, 'h' } @@ -2359,7 +2364,7 @@ static int builtin_read(parser_t &parser, wchar_t **argv) int opt = wgetopt_long(argc, argv, - L"xglUup:c:hm:s", + L"xglUup:c:hm:sa", long_options, &opt_index); if (opt == -1) @@ -2414,6 +2419,10 @@ static int builtin_read(parser_t &parser, wchar_t **argv) shell = 1; break; + case 'a': + array = 1; + break; + case 'h': builtin_print_help(parser, argv[0], stdout_buffer); return STATUS_BUILTIN_OK; @@ -2446,6 +2455,14 @@ static int builtin_read(parser_t &parser, wchar_t **argv) return STATUS_BUILTIN_ERROR; } + if (array && woptind+1 != argc) + { + append_format(stderr_buffer, _(L"%ls: --array option requires a single variable name.\n"), argv[0]); + builtin_print_help(parser, argv[0], stderr_buffer); + + return STATUS_BUILTIN_ERROR; + } + /* Verify all variable names */ @@ -2580,18 +2597,64 @@ static int builtin_read(parser_t &parser, wchar_t **argv) wchar_t *state; env_var_t ifs = env_get_string(L"IFS"); - if (ifs.missing()) - ifs = L""; - nxt = wcstok(buff, (i 0) + { + wcstring chars(bufflen+(bufflen-1), ARRAY_SEP); + for (size_t j=0; j-u or --unexport prevents the variables from being exported to child processes (default behaviour). - -U or --universal causes the specified shell variable to be made universal. - -x or --export exports the variables to child processes. +- -a or --array stores the result as an array. \c read reads a single line of input from stdin, breaks it into tokens based on the IFS shell variable, and then assigns one token to each variable specified in VARIABLES. If there are more tokens than variables, the complete remainder is assigned to the last variable. +As a special case, if \c IFS is set to the empty string, each character of the +input is considered a separate token. + +If \c -a or \c --array is provided, only one variable name is allowed and the +tokens are stored as an array in this variable. See the documentation for \c set for more details on the scoping rules for variables. diff --git a/tests/read.err b/tests/read.err new file mode 100644 index 000000000..e69de29bb diff --git a/tests/read.in b/tests/read.in new file mode 100644 index 000000000..53f9873b6 --- /dev/null +++ b/tests/read.in @@ -0,0 +1,72 @@ +# +# Test read builtin and IFS +# + +count (echo one\ntwo) +set -l IFS \t +count (echo one\ntwo) +set -l IFS +count (echo one\ntwo) +set -le IFS + +function print_vars --no-scope-shadowing + set -l space + set -l IFS \n # ensure our command substitution works right + for var in $argv + echo -n $space (count $$var) \'$$var\' + set space '' + end + echo +end + +echo +echo 'hello there' | read -l one two +print_vars one two +echo 'hello there' | read -l one +print_vars one +echo '' | read -l one +print_vars one +echo '' | read -l one two +print_vars one two +echo 'test' | read -l one two three +print_vars one two three + +echo +set -l IFS +echo 'hello' | read -l one +print_vars one +echo 'hello' | read -l one two +print_vars one two +echo 'hello' | read -l one two three +print_vars one two three +echo '' | read -l one +print_vars one +echo 't' | read -l one two +print_vars one two +echo 't' | read -l one two three +print_vars one two three +echo ' t' | read -l one two +print_vars one two +set -le IFS + +echo +echo 'hello there' | read -la ary +print_vars ary +echo 'hello' | read -la ary +print_vars ary +echo 'this is a bunch of words' | read -la ary +print_vars ary +echo ' one two three' | read -la ary +print_vars ary +echo '' | read -la ary +print_vars ary + +echo +set -l IFS +echo 'hello' | read -la ary +print_vars ary +echo 'h' | read -la ary +print_vars ary +echo '' | read -la ary +print_vars ary +set -le IFS diff --git a/tests/read.out b/tests/read.out new file mode 100644 index 000000000..6d90fc0e7 --- /dev/null +++ b/tests/read.out @@ -0,0 +1,27 @@ +2 +2 +1 + +1 'hello' 1 'there' +1 'hello there' +1 '' +1 '' 1 '' +1 'test' 1 '' 1 '' + +1 'hello' +1 'h' 1 'ello' +1 'h' 1 'e' 1 'llo' +1 '' +1 't' 1 '' +1 't' 1 '' 1 '' +1 ' ' 1 't' + +2 'hello' 'there' +1 'hello' +6 'this' 'is' 'a' 'bunch' 'of' 'words' +3 'one' 'two' 'three' +0 + +5 'h' 'e' 'l' 'l' 'o' +1 'h' +0 diff --git a/tests/read.status b/tests/read.status new file mode 100644 index 000000000..573541ac9 --- /dev/null +++ b/tests/read.status @@ -0,0 +1 @@ +0 diff --git a/tests/top.out b/tests/top.out index 768526c66..f2873b153 100644 --- a/tests/top.out +++ b/tests/top.out @@ -1,5 +1,6 @@ Testing high level script functionality File printf.in tested ok +File read.in tested ok File test1.in tested ok File test2.in tested ok File test3.in tested ok