forked from lix-project/lix
* Refactoring: move initialisation and argument parsing into a shared
file.
This commit is contained in:
parent
01b34fe584
commit
f826e432aa
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@ -3,7 +3,7 @@ check_PROGRAMS = test
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AM_CXXFLAGS = -DSYSTEM=\"@host@\" -Wall -I..
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nix_SOURCES = nix.cc
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nix_SOURCES = nix.cc shared.cc
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nix_LDADD = libnix.a -ldb_cxx-4 -lATerm
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TESTS = test
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@ -106,7 +106,7 @@ static void runProgram(const string & program, Environment env)
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} catch (exception & e) {
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cerr << format("build error: %1%\n") % e.what();
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<EFBFBD> }
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}
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_exit(1);
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}
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56
src/nix.cc
56
src/nix.cc
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@ -1,11 +1,10 @@
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#include <iostream>
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#include "config.h"
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#include "globals.hh"
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#include "values.hh"
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#include "eval.hh"
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#include "archive.hh"
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#include "shared.hh"
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typedef void (* Operation) (Strings opFlags, Strings opArgs);
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@ -224,39 +223,14 @@ static void opInit(Strings opFlags, Strings opArgs)
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}
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/* Initialize, process arguments, and dispatch to the right
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operation. */
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static void run(int argc, char * * argv)
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/* Scan the arguments; find the operation, set global flags, put all
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other flags in a list, and put all other arguments in another
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list. */
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void run(Strings args)
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{
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/* Setup Nix paths. */
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nixStore = NIX_STORE_DIR;
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nixLogDir = NIX_LOG_DIR;
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nixDB = (string) NIX_STATE_DIR + "/nixstate.db";
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/* Put the arguments in a vector. */
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Strings args;
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while (argc--) args.push_back(*argv++);
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args.erase(args.begin());
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/* Expand compound dash options (i.e., `-qlf' -> `-q -l -f'). */
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for (Strings::iterator it = args.begin();
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it != args.end(); )
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{
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string arg = *it;
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if (arg.length() > 2 && arg[0] == '-' && arg[1] != '-') {
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for (unsigned int i = 1; i < arg.length(); i++)
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args.insert(it, (string) "-" + arg[i]);
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it = args.erase(it);
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} else it++;
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}
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Strings opFlags, opArgs;
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Operation op = 0;
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/* Scan the arguments; find the operation, set global flags, put
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all other flags in a list, and put all other arguments in
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another list. */
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for (Strings::iterator it = args.begin();
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it != args.end(); it++)
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{
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@ -291,22 +265,4 @@ static void run(int argc, char * * argv)
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}
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int main(int argc, char * * argv)
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{
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/* ATerm setup. */
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ATerm bottomOfStack;
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ATinit(argc, argv, &bottomOfStack);
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try {
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run(argc, argv);
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} catch (UsageError & e) {
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cerr << "error: " << e.what() << endl
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<< "Try `nix --help' for more information.\n";
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return 1;
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} catch (exception & e) {
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cerr << "error: " << e.what() << endl;
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return 1;
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}
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return 0;
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}
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string programId = "nix";
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63
src/shared.cc
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63
src/shared.cc
Normal file
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@ -0,0 +1,63 @@
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#include <iostream>
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extern "C" {
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#include <aterm2.h>
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}
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#include "globals.hh"
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#include "shared.hh"
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#include "config.h"
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/* Initialize and reorder arguments, then call the actual argument
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processor. */
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static void initAndRun(int argc, char * * argv)
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{
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/* Setup Nix paths. */
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nixStore = NIX_STORE_DIR;
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nixLogDir = NIX_LOG_DIR;
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nixDB = (string) NIX_STATE_DIR + "/nixstate.db";
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/* Put the arguments in a vector. */
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Strings args;
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while (argc--) args.push_back(*argv++);
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args.erase(args.begin());
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/* Expand compound dash options (i.e., `-qlf' -> `-q -l -f'). */
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for (Strings::iterator it = args.begin();
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it != args.end(); )
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{
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string arg = *it;
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if (arg.length() > 2 && arg[0] == '-' && arg[1] != '-') {
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for (unsigned int i = 1; i < arg.length(); i++)
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args.insert(it, (string) "-" + arg[i]);
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it = args.erase(it);
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} else it++;
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}
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run(args);
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}
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int main(int argc, char * * argv)
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{
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/* ATerm setup. */
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ATerm bottomOfStack;
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ATinit(argc, argv, &bottomOfStack);
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try {
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initAndRun(argc, argv);
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} catch (UsageError & e) {
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cerr << format(
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"error: %1%\n"
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"Try `%2% --help' for more information.\n")
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% e.what() % programId;
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return 1;
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} catch (exception & e) {
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cerr << format("error: %1%\n") % e.what();
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return 1;
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}
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return 0;
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}
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15
src/shared.hh
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15
src/shared.hh
Normal file
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@ -0,0 +1,15 @@
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#ifndef __SHARED_H
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#define __SHARED_H
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#include <string>
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#include "util.hh"
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void run(Strings args);
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extern string programId;
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#endif /* !__SHARED_H */
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