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[read-opt] experiment iterate

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This commit is contained in:
John Kerl 2015-08-27 22:55:03 -04:00
parent 4233f1f18b
commit bd85ae398a
3 changed files with 74 additions and 1 deletions
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7
c/bld.sh
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gcc -Wall -Werror -I. lib/mlrutil.c lib/string_builder.c lib/mlr_globals.c containers/slls.c input/peek_file_reader.c experimental/csv0.c
#gcc -Wall -Werror -I. lib/mlrutil.c lib/string_builder.c lib/mlr_globals.c containers/slls.c input/peek_file_reader.c experimental/csv0.c
gcc -Wall -Werror -I. -O3 lib/mlrutil.c lib/mlr_globals.c experimental/getline_for_profile.c -o get1
gcc -Wall -Werror -I. -O3 lib/mlrutil.c lib/mlr_globals.c \
lib/string_builder.c \
input/peek_file_reader.c \
experimental/getmulti_for_profile.c -o get2

17
c/experimental/getline_for_profile.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include "lib/mlrutil.h"
#include "input/file_reader_stdio.h"
#include "input/lrec_readers.h"
int main(void) {
while (1) {
char* line = mlr_get_line(stdin, '\n');
if (line == NULL)
break;
fputs(line, stdout);
fputc('\n', stdout);
free(line);
}
return 0;
}

51
c/experimental/getmulti_for_profile.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include "lib/mlr_globals.h"
#include "lib/mlrutil.h"
#include "containers/slls.h"
#include "containers/lhmslv.h"
#include "input/file_reader_stdio.h"
#include "input/lrec_readers.h"
#include "lib/string_builder.h"
#include "input/peek_file_reader.h"
#define PEEK_BUF_LEN 32
#define STRING_BUILDER_INIT_SIZE 1024
static char* mlr_get_line2(FILE* input_stream, char* irs, int irs_len,
peek_file_reader_t* pfr, string_builder_t* psb)
{
while (TRUE) {
if (pfr_at_eof(pfr)) {
if (sb_is_empty(psb))
return NULL;
else
return sb_finish(psb);
} else if (pfr_next_is(pfr, irs, irs_len)) {
if (!pfr_advance_past(pfr, irs)) {
fprintf(stderr, "%s: Internal coding error: IRS found and lost.\n", MLR_GLOBALS.argv0);
exit(1);
}
return sb_finish(psb);
} else {
sb_append_char(psb, pfr_read_char(pfr));
}
}
}
int main(void) {
FILE* input_stream = stdin;
peek_file_reader_t* pfr = pfr_alloc(input_stream, PEEK_BUF_LEN);
string_builder_t sb;
string_builder_t* psb = &sb;
sb_init(&sb, STRING_BUILDER_INIT_SIZE);
while (1) {
char* line = mlr_get_line2(stdin, "\r\n", 2, pfr, psb);
if (line == NULL)
break;
fputs(line, stdout);
free(line);
}
return 0;
}