| 1 | Index: library.scm |
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| 2 | =================================================================== |
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| 3 | --- library.scm (revision 15090) |
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| 4 | +++ library.scm (working copy) |
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| 5 | @@ -1663,7 +1663,38 @@ |
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| 6 | (##sys#check-structure k 'continuation 'continuation-return) |
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| 7 | (continuation-graft k (lambda () (apply values vals))) ) ) ) |
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| 8 | |
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| 9 | +;;; Parameters: |
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| 10 | |
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| 11 | +(define ##sys#default-parameter-vector (##sys#make-vector default-parameter-vector-size)) |
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| 12 | +(define ##sys#current-parameter-vector '#()) |
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| 13 | + |
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| 14 | +(define make-parameter |
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| 15 | + (let ([count 0]) |
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| 16 | + (lambda (init . guard) |
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| 17 | + (let* ([guard (if (pair? guard) (car guard) (lambda (x) x))] |
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| 18 | + [val (guard init)] |
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| 19 | + [i count] ) |
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| 20 | + (set! count (fx+ count 1)) |
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| 21 | + (when (fx>= i (##sys#size ##sys#default-parameter-vector)) |
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| 22 | + (set! ##sys#default-parameter-vector |
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| 23 | + (##sys#grow-vector ##sys#default-parameter-vector (fx+ i 1) (##core#undefined)) ) ) |
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| 24 | + (##sys#setslot ##sys#default-parameter-vector i val) |
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| 25 | + (lambda arg |
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| 26 | + (let ([n (##sys#size ##sys#current-parameter-vector)]) |
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| 27 | + (cond [(pair? arg) |
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| 28 | + (when (fx>= i n) |
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| 29 | + (set! ##sys#current-parameter-vector |
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| 30 | + (##sys#grow-vector ##sys#current-parameter-vector (fx+ i 1) ##sys#snafu) ) ) |
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| 31 | + (##sys#setslot ##sys#current-parameter-vector i (guard (##sys#slot arg 0))) |
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| 32 | + (##core#undefined) ] |
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| 33 | + [(fx>= i n) |
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| 34 | + (##sys#slot ##sys#default-parameter-vector i) ] |
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| 35 | + [else |
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| 36 | + (let ([val (##sys#slot ##sys#current-parameter-vector i)]) |
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| 37 | + (if (eq? val ##sys#snafu) |
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| 38 | + (##sys#slot ##sys#default-parameter-vector i) |
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| 39 | + val) ) ] ) ) ) ) ) ) ) |
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| 40 | + |
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| 41 | ;;; Ports: |
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| 42 | |
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| 43 | (define (port? x) (##core#inline "C_i_portp" x)) |
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| 44 | @@ -1844,30 +1875,45 @@ |
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| 45 | (define (##sys#pathname-resolution name thunk . _) |
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| 46 | (thunk (##sys#expand-home-path name)) ) |
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| 47 | |
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| 48 | -(define ##sys#expand-home-path |
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| 49 | +(define ##sys#tilde-expander |
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| 50 | + ;; expects single path component without the tilde; |
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| 51 | + ;; in other words, a username or an empty string |
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| 52 | (let ((getenv getenv)) |
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| 53 | - (lambda (path) |
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| 54 | - (let ((len (##sys#size path))) |
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| 55 | - (if (fx> len 0) |
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| 56 | - (case (##core#inline "C_subchar" path 0) |
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| 57 | - ((#\~) |
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| 58 | - (let ((rest (##sys#substring path 1 len))) |
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| 59 | - (if (and (fx> len 1) (char=? #\/ (##core#inline "C_subchar" path 1))) |
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| 60 | - (##sys#string-append (or (getenv "HOME") "") rest) |
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| 61 | - (##sys#string-append "/home/" rest) ) ) ) |
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| 62 | - ((#\$) |
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| 63 | - (let loop ((i 1)) |
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| 64 | - (if (fx>= i len) |
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| 65 | - path |
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| 66 | - (let ((c (##core#inline "C_subchar" path i))) |
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| 67 | - (if (or (eq? c #\/) (eq? c #\\)) |
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| 68 | - (##sys#string-append |
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| 69 | - (or (getenv (##sys#substring path 1 i)) "") |
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| 70 | - (##sys#substring path i len)) |
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| 71 | - (loop (fx+ i 1)) ) ) ) ) ) |
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| 72 | - (else path) ) |
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| 73 | - "") ) ) ) ) |
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| 74 | + (make-parameter |
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| 75 | + (lambda (str) |
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| 76 | + (if (fx= (##sys#size str) 0) |
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| 77 | + (or (getenv "HOME") "~") |
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| 78 | + (##sys#string-append "/home/" str)))))) |
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| 79 | |
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| 80 | +(define ##sys#expand-home-path |
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| 81 | + (lambda (path) |
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| 82 | + (let ((len (##sys#size path))) |
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| 83 | + (if (fx> len 0) |
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| 84 | + (case (##core#inline "C_subchar" path 0) |
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| 85 | + ((#\~) |
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| 86 | + (let loop ((sep 1)) |
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| 87 | + (cond ((fx> sep len) |
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| 88 | + ((##sys#tilde-expander) |
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| 89 | + (##sys#substring path 1 len))) |
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| 90 | + ((char=? #\/ (##core#inline "C_subchar" path sep)) |
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| 91 | + (##sys#string-append |
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| 92 | + ((##sys#tilde-expander) |
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| 93 | + (##sys#substring path 1 sep)) |
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| 94 | + (##sys#substring path sep len))) |
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| 95 | + (else (loop (fx+ sep 1)))))) |
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| 96 | + ((#\$) |
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| 97 | + (let loop ((i 1)) |
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| 98 | + (if (fx>= i len) |
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| 99 | + path |
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| 100 | + (let ((c (##core#inline "C_subchar" path i))) |
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| 101 | + (if (or (eq? c #\/) (eq? c #\\)) |
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| 102 | + (##sys#string-append |
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| 103 | + (or (getenv (##sys#substring path 1 i)) "") |
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| 104 | + (##sys#substring path i len)) |
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| 105 | + (loop (fx+ i 1)) ) ) ) ) ) |
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| 106 | + (else path) ) |
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| 107 | + "") ) ) ) |
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| 108 | + |
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| 109 | (define open-input-file) |
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| 110 | (define open-output-file) |
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| 111 | (define close-input-port) |
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| 112 | @@ -2034,40 +2080,6 @@ |
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| 113 | (##sys#string-append "cannot rename file - " strerror) old new) ) ) ) ) |
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| 114 | #:rename new) ) |
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| 115 | |
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| 116 | - |
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| 117 | -;;; Parameters: |
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| 118 | - |
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| 119 | -(define ##sys#default-parameter-vector (##sys#make-vector default-parameter-vector-size)) |
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| 120 | -(define ##sys#current-parameter-vector '#()) |
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| 121 | - |
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| 122 | -(define make-parameter |
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| 123 | - (let ([count 0]) |
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| 124 | - (lambda (init . guard) |
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| 125 | - (let* ([guard (if (pair? guard) (car guard) (lambda (x) x))] |
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| 126 | - [val (guard init)] |
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| 127 | - [i count] ) |
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| 128 | - (set! count (fx+ count 1)) |
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| 129 | - (when (fx>= i (##sys#size ##sys#default-parameter-vector)) |
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| 130 | - (set! ##sys#default-parameter-vector |
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| 131 | - (##sys#grow-vector ##sys#default-parameter-vector (fx+ i 1) (##core#undefined)) ) ) |
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| 132 | - (##sys#setslot ##sys#default-parameter-vector i val) |
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| 133 | - (lambda arg |
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| 134 | - (let ([n (##sys#size ##sys#current-parameter-vector)]) |
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| 135 | - (cond [(pair? arg) |
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| 136 | - (when (fx>= i n) |
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| 137 | - (set! ##sys#current-parameter-vector |
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| 138 | - (##sys#grow-vector ##sys#current-parameter-vector (fx+ i 1) ##sys#snafu) ) ) |
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| 139 | - (##sys#setslot ##sys#current-parameter-vector i (guard (##sys#slot arg 0))) |
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| 140 | - (##core#undefined) ] |
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| 141 | - [(fx>= i n) |
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| 142 | - (##sys#slot ##sys#default-parameter-vector i) ] |
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| 143 | - [else |
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| 144 | - (let ([val (##sys#slot ##sys#current-parameter-vector i)]) |
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| 145 | - (if (eq? val ##sys#snafu) |
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| 146 | - (##sys#slot ##sys#default-parameter-vector i) |
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| 147 | - val) ) ] ) ) ) ) ) ) ) |
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| 148 | - |
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| 149 | - |
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| 150 | ;;; Input: |
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| 151 | |
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| 152 | (define (eof-object? x) (##core#inline "C_eofp" x)) |
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| 153 | Index: posixunix.scm |
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| 154 | =================================================================== |
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| 155 | --- posixunix.scm (revision 15090) |
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| 156 | +++ posixunix.scm (working copy) |
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| 157 | @@ -527,7 +527,19 @@ |
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| 158 | "if(select(fd + 1, &in, NULL, NULL, &tm) == -1) return(-1);" |
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| 159 | "else return(FD_ISSET(fd, &in) ? 1 : 0);" ) ) |
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| 160 | |
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| 161 | +;; Global parameter modifications: |
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| 162 | |
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| 163 | +(##sys#tilde-expander ; override library.scm tilde expansion |
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| 164 | + (lambda (str) |
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| 165 | + (if (fx= (##sys#size str) 0) |
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| 166 | + (or (getenv "HOME") |
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| 167 | + (let ((info (user-information (current-user-id)))) |
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| 168 | + (and info (list-ref info 5))) |
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| 169 | + "~") |
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| 170 | + (let ((info (user-information str))) |
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| 171 | + (or (and info (list-ref info 5)) |
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| 172 | + (##sys#string-append "~" str)))))) |
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| 173 | + |
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| 174 | ;;; Lo-level I/O: |
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| 175 | |
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| 176 | (define-foreign-variable _pipe_buf int "PIPE_BUF") |
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