add 66-writenv, 66-gnwenv

src/extra-tools/66-gnwenv.c

+/* 
+ * 66-gnwenv.c
+ * 
+ * Copyright (c) 2018-2019 Eric Vidal <eric@obarun.org>
+ * 
+ * All rights reserved.
+ * 
+ * This file is part of Obarun. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution.
+ * This file may not be copied, modified, propagated, or distributed
+ * except according to the terms contained in the LICENSE file./
+ */
+ 
+#include <string.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/wait.h>
+
+#include <oblibs/string.h>
+
+#include <skalibs/types.h>
+#include <skalibs/buffer.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/env.h>
+#include <skalibs/djbunix.h>
+
+#define MAX_ENV 4095
+static char const *pattern = 0 ;
+
+#define USAGE "66-gnwenv [ -m ] process dir file"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+static inline void info_help (void)
+{
+  static char const *help =
+"66-gnwenv <options> process dir file\n"
+"\n"
+"options :\n"
+"	-h: print this help\n" 
+"	-m: create dir with given mode\n"
+;
+
+ if (buffer_putsflush(buffer_1, help) < 0)
+    strerr_diefu1sys(111, "write to stdout") ;
+}
+
+static void string_env(char *tmp,char const *s,size_t len)
+{
+	int pos = 0 ;
+	ssize_t r = 0 ;
+	
+	while ((pos < len) && (r != -1))
+	{
+		r = get_len_until(s+pos,'\n') ;
+		memcpy(tmp+pos,s+pos,r) ;
+		tmp[pos+r] = 0 ;
+		pos += ++r ;/**+1 to skip the \n character*/
+	}
+}
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+	int r = 0 , pf, rm = 0, m = 0, fd[2], did = 0 ;
+	ssize_t slen = 0 ; 
+	
+	unsigned int mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ;
+	
+	char const *dir = 0 , *file = 0 ;
+	char const *newargv[6+1] ;
+	char const *newread[5+1] ;
+	char md[UINT32_FMT] ;
+	char buf[MAX_ENV+1] ;
+	char tmp[MAX_ENV+1] ;
+	
+	PROG = "66-gnwenv" ;
+	{
+		subgetopt_t l = SUBGETOPT_ZERO ;
+		for (;;)
+		{
+			int opt = subgetopt_r(argc, argv, "m:", &l) ;
+			if (opt == -1) break ;
+			switch (opt)
+			{
+				case 'm' : if (!uint0_oscan(l.arg, &mode)) dieusage() ; did = 1 ; break ;
+				default : dieusage() ;
+			}
+		}
+		argc -= l.ind ; argv += l.ind ;
+	}
+	if (argc < 3) dieusage() ;
+	pattern = argv[0] ;
+	dir = argv[1] ;
+	if (dir[0] != '/') strerr_dief2x(111,dir," must be an absolute path") ;
+	file = argv[2] ;
+	
+	newread[rm++] = "66-getenv" ;
+	newread[rm++] = pattern ;
+	newread[rm++] = dir ;
+	newread[rm++] = file ;
+	newread[rm++] = 0 ;
+	
+	if (pipe(fd) < 0) strerr_diefu1sys(111,"pipe") ;
+	pf = fork() ;
+	if (pf < 0) strerr_diefu1sys(111,"fork") ;
+	if (!pf)
+	{
+		dup2(fd[1],1) ;
+		pathexec(newread) ;
+	}
+	else
+	{	
+		wait(NULL) ;
+		slen = read(fd[0],buf,MAX_ENV) ;
+		if (!slen) return 0 ;
+		buf[slen] = 0 ;
+	}
+ 	r = get_nbline(buf,slen) ;
+ 	
+ 	string_env(tmp,buf,slen) ;
+	
+	md[uint32_fmt(md,mode)] = 0 ;
+
+	newargv[m++] = "66-writenv" ;
+	if (did)
+	{
+		newargv[m++] = "-m" ;
+		newargv[m++] = md ;
+	}
+	newargv[m++] = dir ;
+	newargv[m++] = file ;
+	newargv[m++] = 0 ;
+		
+	char const *v[r + 1] ;
+	if (!env_make (v, r ,tmp, slen)) strerr_diefu1sys(111,"make environment") ;
+	v[r] = 0 ;
+	
+	xpathexec_fromenv (newargv, v, r) ;
+}
+
+
+

src/extra-tools/66-writenv.c

+/* 
+ * 66-writenv.c
+ * 
+ * Copyright (c) 2018-2019 Eric Vidal <eric@obarun.org>
+ * 
+ * All rights reserved.
+ * 
+ * This file is part of Obarun. It is subject to the license terms in
+ * the LICENSE file found in the top-level directory of this
+ * distribution.
+ * This file may not be copied, modified, propagated, or distributed
+ * except according to the terms contained in the LICENSE file./
+ */
+ 
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>//fsync,close
+#include <errno.h>
+
+#include <skalibs/types.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/buffer.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/djbunix.h>
+
+#define MAX_ENV 4095
+#define USAGE "66-writenv [ -m mode ] dir file"
+#define dieusage() strerr_dieusage(100, USAGE)
+
+static inline void info_help (void)
+{
+  static char const *help =
+"66-writenv <options> dir file\n"
+"\n"
+"options :\n"
+"	-h: print this help\n" 
+"	-m: create dir with given mode\n"
+;
+
+ if (buffer_putsflush(buffer_1, help) < 0)
+    strerr_diefu1sys(111, "write to stdout") ;
+}
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+	unsigned int mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ;
+	size_t dirlen, filen ;
+	buffer b ;
+	int fd ;
+	char const *dir = 0 , *file = 0 ;
+	char buf[MAX_ENV+1] ;
+	PROG = "66-writenv" ;
+	{
+		subgetopt_t l = SUBGETOPT_ZERO ;
+		for (;;)
+		{
+			int opt = subgetopt_r(argc, argv, "hm:", &l) ;
+			if (opt == -1) break ;
+			switch (opt)
+			{
+				case 'h' : info_help() ; return 0 ;
+				case 'm' : if (!uint0_oscan(l.arg, &mode)) dieusage() ; break ;
+				default : dieusage() ;
+			}
+		}
+		argc -= l.ind ; argv += l.ind ;
+	}
+	if (argc < 2) dieusage() ;
+	dir = argv[0] ;
+	if (dir[0] != '/') strerr_dief2x(111,dir," must be an absolute path") ;
+	file = argv[1] ;
+	
+	if (mkdir(dir, mode) < 0)
+	{
+		struct stat st ;
+		if (errno != EEXIST) strerr_diefu2sys(111, "mkdir ", dir) ;
+		if (stat(dir, &st) < 0)
+			strerr_diefu2sys(111, "stat ", dir) ;
+		if (!S_ISDIR(st.st_mode))
+		{
+			errno = ENOTDIR ;
+			strerr_diefu2sys(111, "mkdir ", dir) ;
+		}
+	}
+	dirlen = strlen(dir) ;
+	filen = strlen(file) ;
+	char fn[dirlen + 1 + filen + 1] ;
+	memcpy(fn,dir,dirlen) ;
+	fn[dirlen] = '/' ;
+	memcpy(fn + dirlen + 1, file ,filen) ;
+	fn[dirlen + 1 + filen] = 0 ;
+	fd = open_trunc(fn) ;
+	if (fd < 0) strerr_diefu2sys(111,"open trunc: ",fn) ;
+ 	buffer_init(&b,&buffer_write,fd,buf,MAX_ENV) ;
+ 	for (; *envp ; envp++)
+	{
+		if ((buffer_put(&b, *envp,strlen(*envp)) < 0) ||
+		(buffer_put(&b, "\n",1) < 0)) { close(fd) ; strerr_diefu1sys(111,"write buffer") ; }
+	}
+	if(!buffer_flush(&b)){ close(fd) ; strerr_diefu1sys(111,"flush") ; }
+	if (fsync(fd) < 0){ close(fd) ; strerr_diefu1sys(111,"sync") ; }
+	close(fd) ;
+	return 0 ;
+}

src/extra-tools/deps-exe/66-gnwenv

+-loblibs
+-lskarnet
+

src/extra-tools/deps-exe/66-writenv

+-lskarnet