From 4bd84d27ec94e5d591a4a8d1bdd035796092207e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D1=82=D1=80=D0=B0=D1=85=D0=B8=D1=9A=D0=B0=20=D0=A0?=
 =?UTF-8?q?=D0=B0=D0=B4=D0=B8=D1=9B?= <contact@strahinja.org>
Date: Sat, 6 Jul 2024 12:23:21 +0000
Subject: [PATCH] defs.h: Move macros to defs.h; use perror(3)

---
 defs.h | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/defs.h b/defs.h
index 7ee3d23..703f6a8 100644
--- a/defs.h
+++ b/defs.h
@@ -12,9 +12,78 @@
 #define ANSI_SGR_BOLD_ON  "\033[1m"
 #define ANSI_SGR_BOLD_OFF "\033[0m"
 
+#define LEN(x)	  (sizeof(x) / sizeof(x[0]))
+#define MAX(a, b) (((a) > (b)) ? (a) : (b))
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #define UNUSED(x) ((void)(x))
 
+#define ENSURE_SIZE(to, temp, tosize, testsize, fromsize, type)      \
+	do                                                           \
+	{                                                            \
+		if (!to || tosize < testsize)                        \
+		{                                                    \
+			tosize = fromsize;                           \
+			temp   = realloc(to, tosize * sizeof(type)); \
+			if (!temp)                                   \
+			{                                            \
+				perror(PROGRAMNAME ": realloc");     \
+				exit(1);                             \
+			}                                            \
+			to = temp;                                   \
+		}                                                    \
+	} while (0)
+
+#define CALLOC(ptr, ptrtype, nmemb)                     \
+	do                                              \
+	{                                               \
+		ptr = calloc(nmemb, sizeof(ptrtype));   \
+		if (!ptr)                               \
+		{                                       \
+			perror(PROGRAMNAME ": calloc"); \
+			exit(1);                        \
+		}                                       \
+	} while (0)
+
+#define REALLOC(ptr, ptrtype, newsize)                   \
+	do                                               \
+	{                                                \
+		ptrtype* newptr = realloc(ptr, newsize); \
+		if (!newptr)                             \
+		{                                        \
+			perror(PROGRAMNAME ": realloc"); \
+			exit(1);                         \
+		}                                        \
+		ptr = newptr;                            \
+	} while (0)
+
+/* Copy *parg to *ptoken and increase ptoken */
+#define CHECKCOPY(token, ptoken, token_size, parg)        \
+	do                                                \
+	{                                                 \
+		if (ptoken + 2 > token + token_size)      \
+		{                                         \
+			size_t old_size = token_size;     \
+			token_size += BUF_DELTA;          \
+			REALLOC(token, char, token_size); \
+			ptoken = token + old_size - 1;    \
+		}                                         \
+		*ptoken++ = *parg++;                      \
+	} while (0)
+
+/* Set *pformat to num and increase pformat */
+#define CHECKSET(format, pformat, format_size, num)        \
+	do                                                 \
+	{                                                  \
+		if (pformat + 2 > format + format_size)    \
+		{                                          \
+			size_t old_size = format_size;     \
+			format_size += BUF_DELTA;          \
+			REALLOC(format, int, format_size); \
+			pformat = format + old_size - 1;   \
+		}                                          \
+		*pformat++ = num;                          \
+	} while (0)
+
 typedef enum {
 	CMD_NONE,
 	CMD_ALIGN,
-- 
2.45.2