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common: add generic input-line interface, and an implementation of it for text files

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This commit is contained in:
max 🍓
2024-11-13 21:36:37 +00:00
parent bf2c9c1d90
commit cbd8639605
6 changed files with 96 additions and 11 deletions
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15
common/include/ivy/file.h Normal file
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@@ -0,0 +1,15 @@
#ifndef IVY_COMMON_FILE_H_
#define IVY_COMMON_FILE_H_
#include <ivy/line-source.h>
#include <stdio.h>
struct ivy_file {
struct ivy_line_source f_base;
FILE *f_fp;
};
extern struct ivy_file *ivy_file_from_fp(FILE *fp);
extern void ivy_file_close(struct ivy_file *file);
#endif

12
common/include/ivy/line-source.h
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@@ -1,21 +1,15 @@
#ifndef IVY_COMMON_LINE_SOURCE_H_
#define IVY_COMMON_LINE_SOURCE_H_
#include <ivy/status.h>
#include <stddef.h>
enum ivy_line_source_status {
IVY_LS_OK = 0,
IVY_LS_EOF,
IVY_LS_ERR_IOERR,
IVY_LS_ERR_NOSYS,
};
struct ivy_line_source {
enum ivy_line_source_status (*s_readline)(
enum ivy_status (*s_readline)(
struct ivy_line_source *, char *, size_t, size_t *, const char *);
};
extern enum ivy_line_source_status ivy_line_source_readline(
extern enum ivy_status ivy_line_source_readline(
struct ivy_line_source *src, char *buf, size_t count, size_t *nr_read,
const char *prompt);

15
common/include/ivy/status.h Normal file
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@@ -0,0 +1,15 @@
#ifndef IVY_COMMON_STATUS_H_
#define IVY_COMMON_STATUS_H_
enum ivy_status {
IVY_OK = 0,
IVY_ERR_EOF = -1,
IVY_ERR_IO_FAILURE = -2,
IVY_ERR_BAD_SYNTAX = -3,
IVY_ERR_NO_MEMORY = -4,
IVY_ERR_NOT_SUPPORTED = -5,
};
extern const char *ivy_status_to_string(enum ivy_status status);
#endif