1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#include "globals.hh"
#include "shared.hh"
#include "eval.hh"
#include "eval-inline.hh"
#include "get-drvs.hh"
#include "attr-path.hh"
#include "value-to-xml.hh"
#include "util.hh"
#include "store-api.hh"
#include "common-opts.hh"
#include "misc.hh"
#include <map>
#include <iostream>
using namespace nix;
void printHelp()
{
showManPage("nix-instantiate");
}
static Expr * parseStdin(EvalState & state)
{
startNest(nest, lvlTalkative, format("parsing standard input"));
return state.parseExprFromString(drainFD(0), absPath("."));
}
static Path gcRoot;
static int rootNr = 0;
static bool indirectRoot = false;
void processExpr(EvalState & state, const Strings & attrPaths,
bool parseOnly, bool strict, Bindings & autoArgs,
bool evalOnly, bool xmlOutput, bool location, Expr * e)
{
if (parseOnly) {
std::cout << format("%1%\n") % *e;
return;
}
Value vRoot;
state.eval(e, vRoot);
foreach (Strings::const_iterator, i, attrPaths) {
Value & v(*findAlongAttrPath(state, *i, autoArgs, vRoot));
state.forceValue(v);
PathSet context;
if (evalOnly)
if (xmlOutput)
printValueAsXML(state, strict, location, v, std::cout, context);
else {
if (strict) state.strictForceValue(v);
std::cout << v << std::endl;
}
else {
DrvInfos drvs;
getDerivations(state, v, "", autoArgs, drvs, false);
foreach (DrvInfos::iterator, i, drvs) {
Path drvPath = i->queryDrvPath();
/* What output do we want? */
string outputName = i->queryOutputName();
if (outputName == "")
throw Error(format("derivation `%1%' lacks an `outputName' attribute ") % drvPath);
if (gcRoot == "")
printGCWarning();
else {
Path rootName = gcRoot;
if (++rootNr > 1) rootName += "-" + int2String(rootNr);
drvPath = addPermRoot(*store, drvPath, rootName, indirectRoot);
}
std::cout << format("%1%%2%\n") % drvPath % (outputName != "out" ? "!" + outputName : "");
}
}
}
}
void run(Strings args)
{
EvalState state;
Strings files;
bool readStdin = false;
bool findFile = false;
bool evalOnly = false;
bool parseOnly = false;
bool xmlOutput = false;
bool xmlOutputSourceLocation = true;
bool strict = false;
Strings attrPaths;
Bindings autoArgs;
for (Strings::iterator i = args.begin(); i != args.end(); ) {
string arg = *i++;
if (arg == "-")
readStdin = true;
else if (arg == "--eval-only") {
settings.readOnlyMode = true;
evalOnly = true;
}
else if (arg == "--read-write-mode") {
settings.readOnlyMode = false;
}
else if (arg == "--parse-only") {
settings.readOnlyMode = true;
parseOnly = evalOnly = true;
}
else if (arg == "--find-file")
findFile = true;
else if (arg == "--attr" || arg == "-A") {
if (i == args.end())
throw UsageError("`--attr' requires an argument");
attrPaths.push_back(*i++);
}
else if (parseOptionArg(arg, i, args.end(), state, autoArgs))
;
else if (parseSearchPathArg(arg, i, args.end(), state))
;
else if (arg == "--add-root") {
if (i == args.end())
throw UsageError("`--add-root' requires an argument");
gcRoot = absPath(*i++);
}
else if (arg == "--indirect")
indirectRoot = true;
else if (arg == "--xml")
xmlOutput = true;
else if (arg == "--no-location")
xmlOutputSourceLocation = false;
else if (arg == "--strict")
strict = true;
else if (arg == "--repair")
state.repair = true;
else if (arg[0] == '-')
throw UsageError(format("unknown flag `%1%'") % arg);
else
files.push_back(arg);
}
if (attrPaths.empty()) attrPaths.push_back("");
if (findFile) {
foreach (Strings::iterator, i, files) {
Path p = state.findFile(*i);
if (p == "") throw Error(format("unable to find `%1%'") % *i);
std::cout << p << std::endl;
}
return;
}
store = openStore();
if (readStdin) {
Expr * e = parseStdin(state);
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, xmlOutput, xmlOutputSourceLocation, e);
} else if (files.empty())
files.push_back("./default.nix");
foreach (Strings::iterator, i, files) {
Expr * e = state.parseExprFromFile(resolveExprPath(lookupFileArg(state, *i)));
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, xmlOutput, xmlOutputSourceLocation, e);
}
state.printStats();
}
string programId = "nix-instantiate";
|
