41 lines
863 B
C
41 lines
863 B
C
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris windows
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#include "runtime.h"
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#include "array.h"
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#include "arch.h"
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#include "malloc.h"
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extern Slice syscall_Envs __asm__ (GOSYM_PREFIX "syscall.Envs");
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const byte*
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runtime_getenv(const char *s)
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{
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int32 i, j;
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intgo len;
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const byte *v, *bs;
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String* envv;
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int32 envc;
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bs = (const byte*)s;
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len = runtime_findnull(bs);
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envv = (String*)syscall_Envs.__values;
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envc = syscall_Envs.__count;
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for(i=0; i<envc; i++){
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if(envv[i].len <= len)
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continue;
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v = (const byte*)envv[i].str;
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for(j=0; j<len; j++)
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if(bs[j] != v[j])
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goto nomatch;
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if(v[len] != '=')
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goto nomatch;
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return v+len+1;
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nomatch:;
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}
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return nil;
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}
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