bulkrays/hcpp2cpp.cpp at master · jd-code/bulkrays · GitHub

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

#include <errno.h>
#include <string.h>

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

bool debug = false;


bool atbeginingosstring = true;

void escape (ostream & out, char c) {
    switch (c) {
	case 10:
	case 13:
		    if (!atbeginingosstring)
			out << "\\015\\012\"";
		    out << c;
		    atbeginingosstring = true;
		    break;

	default:
	    if (atbeginingosstring) {
		out << '"';
		atbeginingosstring = false;
	    }
	    switch (c) {
		case '"':   out << "\\\"";  break;
		case '\\':  out << "\\\\";  break;
		default:    out << c;	    break;
	    }
    }
}

bool parse (istream &in, ostream &out) {
    string  matchbegin ("{{"),
	    matchend ("}}");
#define     MATCHLEN 2
    string const * match = &matchbegin;
    bool incpp = true;
    char c;
    size_t pos = 0;

    while (in && in.get(c)) {
	if (c == (*match)[pos]) {
	    pos ++;
	    if (pos == MATCHLEN) {
		if (incpp) {
		    incpp = false;
		    match = &matchend;
		    atbeginingosstring = true;
		    out << " ";
		} else {
		    incpp = true;
		    match = &matchbegin;
		    if (!atbeginingosstring)
			out << '"';
		    out << " ";
		}
		pos = 0;
	    }
	} else {
	    if (pos != 0) {
		for (size_t i=0 ; i<pos ; i++) {
		    if (incpp)
			out << (*match)[i];
		    else
			escape(out, (*match)[i]);
		}
		pos = 0;
	    }
	    if (incpp)
		out << c;
	    else
		escape(out, c);
	}
    }
    return true;
}

void usage (void) {
    cout << "usage : hcpp2cpp [ ... input.hcpp ... ] -o[ ]output.cc" << endl << endl;
}

int main (int nb, char ** cmde) {

    if (nb == 1) {
	usage();
	return 1;
    }

    string outputfname;

    int i;
    for (i=1 ; i<nb ; i++) {	// let's seek for the output name
	if (strncmp (cmde[i], "-o", 2) == 0) {
	    if (cmde[i][2] != 0) {
		outputfname += (cmde[i] + 2);
	    } else if (i+1 < nb) {
		outputfname += cmde[i+1];
	    }
	    break;
	}
    }

    if (outputfname.empty()) {
	cerr << "hcpp2cpp  error, missing filename output" << endl;
	usage();
	return 1;
    }

    ofstream out(outputfname.c_str());

    if (!out) {
	int e = errno;
	cerr << "hcpp2cpp  error, cannot open " << outputfname << " , "
	     << strerror(e) << endl;
	return 1;
    }

    for (i=1 ; i<nb ; i++) {
	if (strncmp (cmde[i], "-o", 2) == 0) {
	    if (cmde[i][2] == 0) {
		i++;
	    }
	    continue;
	}

	ifstream in(cmde[i]);
	if (!in) {
	    int e = errno;
	    cerr << "hcpp2cpp  error, cannot open " << cmde[i] << " , "
		 << strerror(e) << endl;
	    return 1;
	}
if (debug)
cerr << "parsing " << cmde[i] << " ..." << endl;
	out << "# 1 \"" << cmde[i] << "\"" << endl;
	if (!parse (in, out))
	    break;
    }

    return 0;
}