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
|
#include <map>
#include <iostream>
#include "globals.hh"
#include "shared.hh"
#include "eval.hh"
#include "parser.hh"
#include "get-drvs.hh"
#include "attr-path.hh"
#include "expr-to-xml.hh"
#include "util.hh"
#include "store-api.hh"
#include "common-opts.hh"
#include "help.txt.hh"
using namespace nix;
void printHelp()
{
std::cout << string((char *) helpText, sizeof helpText);
}
static Expr parseStdin(EvalState & state)
{
startNest(nest, lvlTalkative, format("parsing standard input"));
string s, s2;
while (getline(std::cin, s2)) s += s2 + "\n";
return parseExprFromString(state, s, absPath("."));
}
static Path gcRoot;
static int rootNr = 0;
static bool indirectRoot = false;
static void printResult(EvalState & state, Expr e,
bool evalOnly, bool xmlOutput, const ATermMap & autoArgs)
{
PathSet context;
if (evalOnly)
if (xmlOutput)
printTermAsXML(e, std::cout, context);
else
std::cout << format("%1%\n") % canonicaliseExpr(e);
else {
DrvInfos drvs;
getDerivations(state, e, "", autoArgs, drvs);
for (DrvInfos::iterator i = drvs.begin(); i != drvs.end(); ++i) {
Path drvPath = i->queryDrvPath(state);
if (gcRoot == "")
printGCWarning();
else
drvPath = addPermRoot(drvPath,
makeRootName(gcRoot, rootNr),
indirectRoot);
std::cout << format("%1%\n") % drvPath;
}
}
}
void processExpr(EvalState & state, const Strings & attrPaths,
bool parseOnly, bool strict, const ATermMap & autoArgs,
bool evalOnly, bool xmlOutput, Expr e)
{
for (Strings::const_iterator i = attrPaths.begin(); i != attrPaths.end(); ++i) {
Expr e2 = findAlongAttrPath(state, *i, autoArgs, e);
if (!parseOnly)
if (strict)
e2 = strictEvalExpr(state, e2);
else
e2 = evalExpr(state, e2);
printResult(state, e2, evalOnly, xmlOutput, autoArgs);
}
}
void run(Strings args)
{
EvalState state;
Strings files;
bool readStdin = false;
bool evalOnly = false;
bool parseOnly = false;
bool xmlOutput = false;
bool strict = false;
Strings attrPaths;
ATermMap autoArgs(128);
for (Strings::iterator i = args.begin();
i != args.end(); )
{
string arg = *i++;
if (arg == "-")
readStdin = true;
else if (arg == "--eval-only") {
readOnlyMode = true;
evalOnly = true;
}
else if (arg == "--parse-only") {
readOnlyMode = true;
parseOnly = evalOnly = 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 (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 == "--strict")
strict = true;
else if (arg[0] == '-')
throw UsageError(format("unknown flag `%1%'") % arg);
else
files.push_back(arg);
}
if (attrPaths.empty()) attrPaths.push_back("");
store = openStore();
if (readStdin) {
Expr e = parseStdin(state);
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, xmlOutput, e);
}
for (Strings::iterator i = files.begin();
i != files.end(); i++)
{
Path path = absPath(*i);
Expr e = parseExprFromFile(state, path);
processExpr(state, attrPaths, parseOnly, strict, autoArgs,
evalOnly, xmlOutput, e);
}
printEvalStats(state);
}
string programId = "nix-instantiate";
|
