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errno is not set for FILE I/O so we do our best

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This commit is contained in:
krangelov
2021-09-17 10:06:11 +02:00
parent a8bda009a4
commit 3f31d86d0d
5 changed files with 20 additions and 24 deletions
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15
src/runtime/c/pgf/reader.cxx
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@@ -3,10 +3,9 @@
#include <math.h>
#include <string.h>
PgfReader::PgfReader(FILE *in, const char *filepath)
PgfReader::PgfReader(FILE *in)
{
this->in = in;
this->filepath = filepath;
}
uint8_t PgfReader::read_uint8()
@@ -14,9 +13,9 @@ uint8_t PgfReader::read_uint8()
uint8_t b;
size_t n_bytes = fread((char*) &b, sizeof(b), 1, in);
if (feof(in))
throw pgf_error("reached end of file while reading a grammar");
throw pgf_error("reached end of file while reading the grammar");
if (ferror(in))
throw pgf_systemerror(ferror(in), filepath);
throw pgf_error("an error occured while reading the grammar");
return b;
}
@@ -28,7 +27,7 @@ uint16_t PgfReader::read_u16be()
if (feof(in))
throw pgf_error("reached end of file while reading a grammar");
if (ferror(in))
throw pgf_systemerror(ferror(in), filepath);
throw pgf_error("an error occured while reading the grammar");
return (((uint16_t) buf[0]) << 8 | buf[1]);
}
@@ -40,7 +39,7 @@ uint64_t PgfReader::read_u64be()
if (feof(in))
throw pgf_error("reached end of file while reading a grammar");
if (ferror(in))
throw pgf_systemerror(ferror(in), filepath);
throw pgf_error("an error occured while reading the grammar");
return (((uint64_t) buf[0]) << 56 |
((uint64_t) buf[1]) << 48 |
@@ -96,7 +95,7 @@ object PgfReader::read_name_internal(size_t struct_size)
if (feof(in))
throw pgf_error("utf8 decoding error");
if (ferror(in))
throw pgf_systemerror(ferror(in), filepath);
throw pgf_error("an error occured while reading the grammar");
ptext->text[size] = 0;
@@ -132,7 +131,7 @@ object PgfReader::read_text_internal(size_t struct_size)
if (feof(in))
throw pgf_error("utf8 decoding error");
if (ferror(in))
throw pgf_systemerror(ferror(in), filepath);
throw pgf_error("an error occured while reading the grammar");
p += len;
}